Tokyo Underground Killer is a neon-drenched katana action game that throws you into a fever‑dream version of Tokyo. You play as Kobayashi, the feared "Shinjuku Vampire," a hired blade who hunts down deranged foes across stylized districts like Shinjuku, Akihabara, and Shibuya. Fast, brutal melee combat pairs with a blood-powered skill system, a bizarre hand-drawn comic narrative, and an original electronic soundtrack for a visceral, pulsing experience.