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Jun Sasaki

Jun Sasaki

Writer & Creator in Tokyo

More about me ↓

What I'm Working On

Road to 2112

Road to 2112

A world where humans and robots share everyday life. Near-future short stories sparked by today's news.

Read on Kindle →

Listen as a podcast

A 1–2 hour bedtime podcast (in English).

2112 Music

Work Timer 2112

Pomodoro timers for staying focused while working or studying.

Lo-fi 2112

Lo-fi beats from the year 2112. Background music for work, study, and sleep.

Sleep 2112

The bedtime soundscape of Road to 2112. No melody, just calm — made for sleep.

Study River

A4 learning drills you personalize by talking with AI — for you and your kids. Expanding all the time.

Make yours at studyriver.app →

Maze

A channel dedicated to solving maze after maze. Find the route and keep moving.

Odd

Odd-one-out challenges — quick drills for eyes and mind.

Math

Language-free math drills for the whole world. Timed challenges on YouTube, PDFs on Gumroad.

Free math drill pack on Gumroad →

Logic

Logic puzzle drills to sharpen your thinking.

PD

A picture dictionary: learn everyday words through pictures.

Find

Where is NYANO? Find the cat traveler hidden in busy town scenes.

JaEn

An English composition channel focused on building faster responses in conversation.

Free A1 sample pack on Gumroad → Next step: a short book in easy English →

EnJa

Instant Japanese composition for English speakers, plus kanji quizzes.

Ja Vocabulary

Vocabulary drills for the Japanese language.

Stat

Rankings about everyday society, told through statistics (in Japanese).

Shoten.me

Shoten.me

Turns your bookshelf into a little online bookstore. Also surprisingly useful for AI-assisted book picking (I use it myself). Try it for your to-read pile, or just for sharing.

Available: Japan

Open Your Bookstore →

AINOA

AINOA

A 30-volume science fiction saga exploring four distinct cities in a world where humans and AI coexist. Experience the story through merchandise before the novels arrive.

About Me

I'm Jun Sasaki, a writer and creator based in Tokyo.

I believe in a future where technology amplifies human creativity rather than replacing it. My work explores the relationship between humans and AI through stories, products, and tools.

By day, I build businesses. By night, I write stories about the world I want to see in 2112.

LOG

SassaMahha Log

A casual log of business and daily life. The free part shares real numbers; the paid part covers the thinking behind them. Share on X to read everything free, or ¥500 for unlimited reading.

Read Log →

Follow Me

☕ 最寄りはファミマ

Other Things I Do

Free tools · 63 → ・ Hakoniwa Maze →

Other Languages

For other languages, please use Google Translate.