NATSUME INSEKI

THE COMPLETE CATALOG ─ 9 MONTHS, 52 BOOKS

All 52 books.

Most titles are written in Japanese — but here's what each one is about, in English. Titles marked ENGLISH are fully readable in English.

  • Jev in Manga: Automating Side Hustles with the AI That Doesn't Talk

    #53Sep 2026Manga

    Jev in Manga: Automating Side Hustles with the AI That Doesn't Talk

    マンガでわかるJev入門 しゃべらないAIで副業と仕事を自動化する使い方: Claude Code・Codexで作る仕事効率化の始め方から料金・弱点・ChatGPTとの違いまで初心者向けに解説

    Jev, announced by TypeSafe AI on September 15, 2026, never writes text — it only makes judgments. This manga explains how it works, where it's used, side-income ideas with Claude Code and Codex, and its weak points. The third entry in the AI-model manga series, published 12 days after the announcement.

    Amazon (Japanese) →
  • What Is GPT-6 Astra? ChatGPT's New Flagship, in Manga

    #52Sep 2026Manga

    What Is GPT-6 Astra? ChatGPT's New Flagship, in Manga

    ChatGPT新型GPT-6.0の正体とは?Astraの使い方がマンガでわかる!: Sol・Terra・Lunaとの違い、料金・危険性・使い分けを漫画で分かりやすく丸ごと解説

    OpenAI announced GPT-6 Astra on September 3, 2026 — this manga covers how it differs from Sol, Terra and Luna, plus benchmarks, risks and pricing. Published just 10 days after the announcement, following “Goodbye, AI Refugees” and the Fable 5 guide.

    Amazon (Japanese) →
  • The Northern Territories Dispute, in Manga

    #50Aug 2026Manga

    The Northern Territories Dispute, in Manga

    マンガでわかる北方領土問題 なぜ返さない?いつから?ロシアの主張と日本の主張

    Written after President Putin's surprise visit to Etorofu in August 2026. From the 1855 treaty through occupation, negotiations and comparisons with territorial disputes worldwide, this manga lays out both Japan's and Russia's claims in a single volume.

    Amazon (Japanese) →
  • The Mortgage Trap: Behind Japan's 83,000 Bankruptcies, a 13-Year High

    #49Aug 2026Illustrated explainer

    The Mortgage Trap: Behind Japan's 83,000 Bankruptcies, a 13-Year High

    住宅ローンの罠――自己破産、13年ぶり8.3万件の裏側

    Personal bankruptcies in Japan jumped to 83,000 in 2025, the highest in 13 years. Through the eyes of a certified financial planner, this illustrated book uses the latest 2026 data to expose the mortgage traps behind that surge — from variable vs. fixed rates to pair loans and credit life insurance.

    Amazon (Japanese) →
  • The Farmer's Guide to the Citric Acid Cycle, in Manga

    #48Jul 2026Farming guide

    The Farmer's Guide to the Citric Acid Cycle, in Manga

    マンガでわかる!農家が解説するクエン酸回路

    A natural farmer questions the “more sunlight is always better” myth, tracing what happens after photosynthesis — respiration and the citric acid cycle — through personified characters like ATP-chan and Mr. Mitochondria. The sixth entry in the farming-manga series, following on from book #10.

    Amazon (Japanese) →
  • Bicycle Rules in Japan 2026

    #47Jul 2026MangaENGLISH

    Bicycle Rules in Japan 2026

    English edition of the #21/#23 bicycle-ticket series — Japan's April 2026 cycling law changes, real fines and real tickets, explained for tourists, students and residents. Featured in the English Editions section.

    Read on Amazon.com →
  • Elon Musk: Net Worth, Kids, and the World's First Trillionaire

    #46Jul 2026MangaENGLISH

    Elon Musk: Net Worth, Kids, and the World's First Trillionaire

    English edition of #45 — the same 78-page biography manga, updated through the June 2026 SpaceX IPO that made Musk history's first trillionaire. Featured in the English Editions section.

    Read on Amazon.com →
  • Manga Guide to Elon Musk: His Net Worth, Kids, and Life Story Explained

    #45Jul 2026Manga

    Manga Guide to Elon Musk: His Net Worth, Kids, and Life Story Explained

    マンガでわかるイーロン・マスク 資産・子供・生い立ちまで丸わかり

    A full-color, 91-page biography manga tracing the bullied kid from Pretoria to the world's first trillionaire, through Zip2, PayPal, Tesla, SpaceX and X. Japanese original — English edition featured above.

    Amazon (Japanese) →
  • Manga Guide to Kozukenosuke Oguri

    #44Jul 2026Manga

    Manga Guide to Kozukenosuke Oguri

    マンガでわかる小栗上野介──教科書が消した『逆賊の幕臣』の真実

    A full-color, 111-page manga biography of the man chosen as the hero of NHK's 2027 taiga drama — designer of modern Japan's shipyards and finances, erased from the textbooks, executed without trial. An unofficial, fan-made companion for watching the drama.

    Amazon (Japanese) →
  • How to Climb Mount Fuji: A Manga Guide for Beginners

    #43Jul 2026MangaENGLISH

    How to Climb Mount Fuji: A Manga Guide for Beginners

    Everything changed for Mt. Fuji climbers in 2026: mandatory fees, a gate that closes overnight, a daily climber cap. Two students' AI-generated "perfect plan" gets torn apart and rebuilt by a professional guide — so you don't make their mistakes. Featured in the English Editions section.

    Read on Amazon.com →
  • Goodbye, AI Refugee: Which Generative AI Should You Use?

    #42Jul 2026Manga

    Goodbye, AI Refugee: Which Generative AI Should You Use?

    さよなら、AI難民。生成AI、結局どれがいい?

    ChatGPT, Gemini or Claude? The practical answer on which AI to use for what — and which paid plan is actually worth it.

    Amazon (Japanese) →
  • Kozukenosuke Oguri: The Erased Father of Japan's Modernization

    #41Jul 2026Illustrated explainer

    Kozukenosuke Oguri: The Erased Father of Japan's Modernization

    小栗上野介──教科書が書かなかった「もう一人の近代化の父」

    Chosen as the hero of the 2027 NHK Taiga drama: the man who designed modern Japan before Shibusawa Eiichi — and was erased from history.

    Amazon (Japanese) →
  • How to Find What You Want to Do — Just Ask AI

    #40Jul 2026Illustrated explainer

    How to Find What You Want to Do — Just Ask AI

    やりたいことの見つけ方、AIに聞くだけ。

    Ten questions, three axes — like, skill, and values — turn a blank self-analysis notebook into a prompt you can hand straight to AI. For people who can be honest with a machine in ways they can't with a friend.

    Amazon (Japanese) →
  • Don't Lose Weight: The New Science of Longevity

    #39Jul 2026Illustrated explainerENGLISH

    Don't Lose Weight: The New Science of Longevity

    English edition of #34 — body fat, aged garlic's S1PC and NMN as allies against aging. Featured in the English Editions section.

    Read on Amazon.com →
  • The Five Plant Hormones, Explained by a Farmer in Manga

    #38Jun 2026Farming guide

    The Five Plant Hormones, Explained by a Farmer in Manga

    マンガでわかる!農家が教える五大植物ホルモンの働き

    Auxin, gibberellin, cytokinin, ethylene and abscisic acid — a working farmer explains in manga why each of the five major plant hormones works the way it does. The culmination of the series that began with book #10 and continued with book #48.

    Amazon (Japanese) →
  • Why the Sagrada Família Is Never Finished

    #37Jun 2026Manga

    Why the Sagrada Família Is Never Finished

    マンガで分かる!サグラダファミリアが完成しない理由

    144 years, a bookseller's idea, burned blueprints, and a Japanese sculptor who has carved there for 47 years — published within a week of the papal blessing on Gaudí's centenary.

    Amazon (Japanese) →
  • Claude Code: The Complete Fable 5 × Opus 4.8 Guide, in Manga

    #36Jun 2026Manga

    Claude Code: The Complete Fable 5 × Opus 4.8 Guide, in Manga

    マンガでわかる!Claude Code Fable 5 × Opus 4.8完全ガイド

    Published two days after Anthropic unveiled Fable 5. Which model to use, where, and why — sorted out in manga.

    Amazon (Japanese) →
  • The Money Textbook for Farmers, by a Farmer

    #35May 2026Farming guide

    The Money Textbook for Farmers, by a Farmer

    農家が教える、農家のための、お金の教科書

    Born from a first-year farmer who couldn't afford a single iron stake and left his melons and watermelons out in the rain. A working farmer holding Japan's Bookkeeping Level 2, Agricultural Bookkeeping Level 2 and FP Level 2 covers tax returns, blue-form filing, tax savings, subsidies and social insurance for new farmers.

    Amazon (Japanese) →
  • Don't Lose Weight! The S1PC Frontier Against Aging

    #34May 2026Illustrated explainer

    Don't Lose Weight! The S1PC Frontier Against Aging

    痩せるなキケン!老化を止めるS1PC最前線!!

    The 350,000-person Japanese dataset and the 2026 Cell Metabolism paper behind “slightly plump lives longest.” Japanese original — English edition featured above.

    Amazon (Japanese) →
  • The Ex-Salaryman Who Has AI Agents Earning ¥10 Million a Month

    #33May 2026Illustrated explainer

    The Ex-Salaryman Who Has AI Agents Earning ¥10 Million a Month

    12時間労働だった元会社員が、AIエージェントに月1,000万を稼がせる話

    Half life story, half documentary: five people's comebacks from exactly where you might be standing now. The finale of the JV trilogy.

    Amazon (Japanese) →
  • Hantavirus: Up to 50% Fatality Rate?

    #32May 2026Illustrated explainerENGLISH

    Hantavirus: Up to 50% Fatality Rate?

    English edition of #31 — transmission routes, symptoms, vaccine research and a global risk guide. Featured in the English Editions section.

    Read on Amazon.com →
  • Hantavirus: Up to 50% Fatality!? What the Media Won't Tell You

    #31May 2026Illustrated explainer

    Hantavirus: Up to 50% Fatality!? What the Media Won't Tell You

    ハンタウイルス致死率最大50%!? メディアが言わない本当のこと

    Between panic and empty reassurance: just the facts, calmly laid out. Japanese original — the English edition is featured in the English Editions section.

    Amazon (Japanese) →
  • How to Become a Pro Boat Racer

    #30May 2026Manga

    How to Become a Pro Boat Racer

    漫画でわかるボートレーサーになる方法

    One of Japan's biggest pro sports is open to anyone under 30 — no diploma required, any gender, top incomes around ¥40 million. The entry gate, in manga.

    Amazon (Japanese) →
  • Have an AI Agent Earn ¥20,000 While You Sleep

    #29May 2026Illustrated explainer

    Have an AI Agent Earn ¥20,000 While You Sleep

    AIエージェントに、寝てる間に2万円稼がせる。

    Waking up to a 20-page deck your AI finished overnight — the ChatGPT × Manus playbook. JV collaboration #2.

    Amazon (Japanese) →
  • AI Will Not Save You.

    #28May 2026Illustrated explainer

    AI Will Not Save You.

    AIは、あなたを救わない。

    After ¥2 million of self-investment over three years, the author maps why AI alone never moved the needle — and what did. JV collaboration #1, supervised by Naoyuki Kawabata.

    Amazon (Japanese) →
  • The Fertilizer Crisis: What Even Is Oil?

    #27Apr 2026Farming guide

    The Fertilizer Crisis: What Even Is Oil?

    肥料危機 今更聞けない、石油って何? ホルムズ封鎖で農家を直撃する『石油・肥料・ビニール』の正体

    Why a blockade in the Strait of Hormuz raises the price of fertilizer on a Japanese farm — written by a farmer who couldn't answer that question a year earlier.

    Amazon (Japanese) →
  • GPT Image 2, Explained in Manga

    #26Apr 2026Manga

    GPT Image 2, Explained in Manga

    漫画でわかるGPT Image 2

    Out seven days after OpenAI's release. How to get the image you actually meant — in one shot, not twenty retries.

    Amazon (Japanese) →
  • The Trump Dynasty: A Family History in Manga

    #25Apr 2026Manga

    The Trump Dynasty: A Family History in Manga

    マンガでわかるトランプ一族の歴史

    The never-lose survival strategy handed down from the first generation. American politics, with the blueprint attached.

    Amazon (Japanese) →
  • The 2026 Iran War: How Would Buddha Untangle It?

    #24Apr 2026Manga

    The 2026 Iran War: How Would Buddha Untangle It?

    2026イラン戦争、ブッダならどう解く

    World affairs crossed with Buddhist wisdom, released on Buddha's birthday (April 8). News that leaves you with perspective instead of anger.

    Amazon (Japanese) →
  • Japan's New Bicycle Tickets: The Complete Edition

    #23Apr 2026Manga

    Japan's New Bicycle Tickets: The Complete Edition

    【完全版】自転車青切符 知らなきゃ即12,000円罰金!?

    The expanded follow-up to #21: blue tickets, red tickets, road signs and every classic mistake, in one volume.

    Amazon (Japanese) →
  • Train Your “Verbalization Muscle” and Get Stronger

    #22Apr 2026Manga

    Train Your “Verbalization Muscle” and Get Stronger

    「言語化力を鍛える」と人は強くなる

    Putting vague thoughts into words is a muscle, and it can be trained. Heard from a mentor in the morning — drawn and published the same day.

    Amazon (Japanese) →
  • Japan's New Bicycle Tickets: An Instant ¥12,000 Fine!?

    #21Apr 2026Manga

    Japan's New Bicycle Tickets: An Instant ¥12,000 Fine!?

    自転車青切符 知らなきゃ即12,000円罰金!?

    Japan started fining cyclists on the spot — and this manga guide came out the very day the law took effect.

    Amazon (Japanese) →
  • Pruning Is Really Just This: Working with Plant Hormones

    #20Mar 2026Farming guide

    Pruning Is Really Just This: Working with Plant Hormones

    剪定って結局こういうことでしょ ─ 植物ホルモンを活かす

    Where to cut and why, decoded through plant hormones. A field guide that turns every snip from a guess into a decision.

    Amazon (Japanese) →
  • The OpenClaw Revolution: AI Agents Make Everyone a Developer

    #19Mar 2026Illustrated explainer

    The OpenClaw Revolution: AI Agents Make Everyone a Developer

    OpenClaw革命:AIエージェントが全人類を開発者にする日

    The text-and-diagram sister edition of the OpenClaw manga (#13): the day non-programmers start shipping ideas the moment they think of them.

    Amazon (Japanese) →
  • Surviving the AI Era: Elon Musk on Humanity's Future

    #18Mar 2026Illustrated explainer

    Surviving the AI Era: Elon Musk on Humanity's Future

    AI共生時代の生存戦略:イーロン・マスクが語る「人類の未来」

    Musk's view of where AI takes us, and a survival strategy for standing on the “builder” side rather than the “replaced” side.

    Amazon (Japanese) →
  • SCREW IT, LET'S DO IT!

    #17Mar 2026MangaENGLISH

    SCREW IT, LET'S DO IT!

    The author's first English-language manga, based on the true story of the $39 blackboard flight. Available in English — featured in the English Editions section.

    Read on Amazon.com →
  • Why Was Iran Cast as the Villain?

    #16Mar 2026Manga

    Why Was Iran Cast as the Villain?

    なぜイランは「悪」とされたのか?

    Who built the “evil” label, when, and how — the history behind the headlines, untangled in manga.

    Amazon (Japanese) →
  • The Middle East in Flames, 2026: Is There a Way Out?

    #15Mar 2026Manga

    The Middle East in Flames, 2026: Is There a Way Out?

    2026中東の戦火、出口はあるのか?

    Published two days after Mojtaba Khamenei was chosen as successor. The shape of the conflict and its turning point, connected into one line.

    Amazon (Japanese) →
  • Voice-First Social Media Marketing

    #14Mar 2026Manga

    Voice-First Social Media Marketing

    音声SNSマーケティング

    For people who won't show their face and hate writing posts: building a following with nothing but your voice.

    Amazon (Japanese) →
  • OpenClaw × note: A Side Business, in Manga Form

    #13Mar 2026Manga

    OpenClaw × note: A Side Business, in Manga Form

    漫画で分かる!openclaw×note副業

    How to turn the OpenClaw AI agent into side income on note, Japan's blogging platform — the shortest route, drawn step by step.

    Amazon (Japanese) →
  • Milano Cortina 2026: Women's Figure Skating

    #12Feb 2026Manga

    Milano Cortina 2026: Women's Figure Skating

    【2026冬季五輪ミラノコルティナ】女子フィギュアソロ

    The stories each skater carried onto the ice, published four days after the short program. One reader wrote that this book changed their life.

    Amazon (Japanese) →
  • Milano Cortina 2026: Ayumu Hirano and the Halfpipe

    #11Feb 2026Manga

    Milano Cortina 2026: Ayumu Hirano and the Halfpipe

    【2026冬季五輪ミラノコルティナ】スノーボード平野歩夢

    Published the day before the Olympic halfpipe final, with the previous day's qualifying round already included. The fastest fan book physically possible.

    Amazon (Japanese) →
  • The Truth About Nitrogen, as Told by Plant Hormones

    #10Feb 2026Farming guide

    The Truth About Nitrogen, as Told by Plant Hormones

    植物ホルモンが教える「窒素」の真実

    English agronomy papers translated into field language by a working natural farmer. Stop fertilizing by gut feel and start reading the plant's own signals.

    Amazon (Japanese) →
  • Sanae Takaichi: A Life Story in Manga

    #09Jan 2026Manga

    Sanae Takaichi: A Life Story in Manga

    高市早苗バリバリ伝説【マンガでわかる!】

    A biography of political leader Sanae Takaichi, dropped right in the middle of the snap-election campaign — read the person, not the sound bites.

    Amazon (Japanese) →
  • Japan's 2026 Snap Election: The Midwinter Showdown

    #08Jan 2026Manga

    Japan's 2026 Snap Election: The Midwinter Showdown

    2026年解散総選挙!マンガで分かる真冬の決戦!

    Written inside the “will they dissolve parliament?” chaos and published eight days before official campaigning began. The whole battle map, in manga.

    Amazon (Japanese) →
  • Rare Earth Shock: Japan's Deep-Sea Counterattack

    #07Jan 2026Manga

    Rare Earth Shock: Japan's Deep-Sea Counterattack

    レアアース中国輸出停止!南鳥島沖で始まる日本の逆襲と深海試掘

    China halts rare-earth exports and Japan begins deep-sea test drilling off Minamitorishima — published one day before the drilling started.

    Amazon (Japanese) →
  • The New Year Fire-Brigade Parade: Forced Labor Below Minimum Wage

    #06Jan 2026Manga

    The New Year Fire-Brigade Parade: Forced Labor Below Minimum Wage

    【実録】消防団出初式~最低賃金以下の強制労働~

    A documentary manga on Japan's volunteer fire brigades and the rural obligations nobody feels free to refuse. Published two days after the parade; passed 10,000 impressions on X.

    Amazon (Japanese) →
  • How a Grandpa Who Can't Use LINE Became a Mangaka in One Click

    #05Dec 2025Manga

    How a Grandpa Who Can't Use LINE Became a Mangaka in One Click

    LINE苦手な祖父が1クリックで漫画家になった件

    The author casts himself as “Grandpa Natsume” to show that AI-powered manga making is open to absolutely anyone — even the least tech-savvy person in the family.

    Amazon (Japanese) →
  • I Can Say “I'm Sorry”

    #04Dec 2025Picture book

    I Can Say “I'm Sorry”

    ごめんね、いえるよ

    A picture book about a toddler finding the courage to apologize, inspired by the author's two-year-old son. Story written by his wife, Megumi Tamura.

    Amazon (Japanese) →
  • Mourning and New Year's Shrine Visits: Japan's Etiquette, Settled

    #03Dec 2025Manga

    Mourning and New Year's Shrine Visits: Japan's Etiquette, Settled

    喪中は初詣していいの?知らないと恥をかく「正月マナー」の新常識

    The small New Year questions everyone is too embarrassed to ask — mourning, shrine visits, greetings — answered in manga. Born from a casual chat with the author's wife.

    Amazon (Japanese) →
  • The Elite Husband Who Keeps His Family on ¥50,000 a Month

    #02Dec 2025Manga

    The Elite Husband Who Keeps His Family on ¥50,000 a Month

    月5万の極貧生活を強いるエリート夫

    A dark family drama about money and control at home, and where the line of “normal” really sits. The first book of the dark-drama alter ego “The Neighbor's Grass Is Pitch Black.”

    Amazon (Japanese) →
  • The No-Panic Guide to Your First Car Accident

    #01Dec 2025Manga

    The No-Panic Guide to Your First Car Accident

    交通事故を起こしてしまった時に迷わない本

    What to do in the first five minutes after a crash — police, insurance, the other driver — in the right order. The debut work, dropped just before Japan's year-end driving season.

    Amazon (Japanese) →