Nanjo

HANABI is a VR samurai action game for PCVR, made in Godot 4. You walk a rainy, lantern-lit forest at night toward a shrine, fight yōkai with a real-feeling katana, free rare trapped villager souls, and at the end you face an Oni boss controlled by AI. The boss picks its tactics, attacks and spacing live through the Meta Model API and taunts you in a speech bubble, so every fight plays out differently. The game also has a wrist HUD with HP, stamina, charges and round time, element skills, a clickable menu in VR, comfort settings, and a procedurally generated forest. The core idea behind HANABI: AI wrote the entire codebase. I acted only as director and supervisor. I set the vision, wrote the task specs, play-tested on Quest, and reviewed results, while AI agents (including Muse Code) wrote all the code, shaders, tools and tests. HANABI shows that one person can ship a full VR game by directing AI instead of writing code.