Neo-Tokyo 2099 is the rain-slicked neon-noir megacity at night: black asphalt mirroring magenta-and-cyan signage, holographic kana billboards bleeding into endless rain. It is the canonical cyberpunk palette — a near-black ground under a maximum-tension complementary neon duo, deep bridging blues, and a hot-pink hazard flare.

This system distills that downpour-street aesthetic into interface form: neon-outlined cards on black, magenta-to-cyan gradient buttons, glitch hover states, and kana-tagged chips. High density, low light, endless rain, a thousand glowing signs.