What it is
A story-based Japanese reading curriculum where the Japanese is the medium, not the goal. You read a cyberpunk story set in a three-layer Neo-Tokyo; the difficulty curve from N5 to N2 runs through the story itself.
How it works
Per-session spaced repetition, interlinear scaffolding that mixes Japanese and English at a level-appropriate density, and a world rich enough that you want to keep reading — which is the whole point.