It puts the collar on you in the first act and then refuses to let you forget it. Ichika Hoshino spends this whole thing with a poison capsule pressed against her throat, and the tension isn't the countdown, it's that every single person offering to help her has a reason to be lying. Adonis turned Shinjuku into a city where the public cheers for murder, and the film leans into that rot instead of softening it: the crimes are ugly, the police are compromised, and Ichika's badge means nothing to anyone. Five men close in around her, and because this is an otome story rendered as film, you don't get to pick one, you get to watch her weigh all of them at once. What sticks is smaller than the conspiracy. A cop who keeps working the case because sitting still is worse than dying.
Shinjuku descends into terror as an underground organization wages systematic violence against the city. When police officer Ichika Hoshino becomes collateral damage in their campaign, she wakes with a poisonous collar locked around her neck: a countdown to her own death, a message, and a problem with no obvious solution. Forced to hunt for answers that might save her life, Ichika encounters five men operating in the shadows of Shinjuku's criminal underworld. Each claims to want to help her uncover the truth behind the collar and the conspiracy threatening to consume the city. Each has their own reasons for getting involved, their own secrets, and their own agendas that may or may not align with her survival. As Ichika races against time, she must navigate which of her unexpected allies can actually be trusted. The investigation pulls her deeper into a web where innocence is a liability and every connection cuts both ways. Solving this mystery means confronting uncomfortable truths about the men around her and about Shinjuku itself.