Neon
Oni

Haruto is a quiet university student by day, but by night he stalks the neon labyrinth of Shibuya as a secret oni hunter. His partner is Rei Kazama—the cold, relentless exorcist whose reputation alone makes lesser demons flee. They are oil and water: Haruto hesitates, Rei strikes. But each mission strips away another layer of their walls. When the Oni King declares the Arena of the Damned—a tournament where humanity's survival hangs on a single champion—the two are bound together as the city's last hope. In a Tokyo where skyscrapers bleed neon and monsters wear human faces, the greatest battle isn't against oni... it's against the dangerous, forbidden pull between them.