Chapter 1 · Blue Pen
A doodle on the corner of homework.
It started with a single blue pen drawing of two sisters fighting over a crayon, and a dad sketching a character that could mediate arguments through stories.
002 · Genesis
From a Pen
to a Writing Universe.
j2d started as a courage from a dad to two daughters: that AI could be a gentle, disciplined coach — not a noisy, distracting toy.
The Story: 2 Daughters to Daddy
A small bedtime sketch turned into a multi‑year lab on how children and AI can learn to write together, without losing their own voice.
Chapter 2 · 3D Characters
From scribbles to cinematic.
The JOT world evolved into 3D AI‑assisted character studies — each designed to coach empathy, structure, and courage on the page.
Chapter 3 · JOT 執筆
Turning experiments into a school‑safe coach.
The prototypes became JOT: an AI writing lab that protects red lines, logs every improvement, and turns micro‑sessions into long‑term mastery.
Evolution Lab: Action Breeds Mastery
Micro‑missions, not mega essays
JOT breaks writing into tiny actionable drills. Each session adds one new technique, not ten.
Visible XP for invisible effort
From streaks to “writing energy” bars, mastery is tracked so students see progress, not just grades.
Teachers stay in the loop
Every AI nudge can be surfaced to educators as a “coaching log”, not a black‑box judgement.