On the eve of the start of the school year, Mochizuki Oboro finally obtained her own cheat system. A Gal romance system—it sounded so wonderful… wait, why is there an AI in this system that calls itself BB? In the legends of Finis Academy, Mochizuki Oboro left behind a formidable reputation: childhood friend Utsumi Erise, kindergarten teacher Atalanta, student council president Marie Antoinette, Aztec vice president Traloc… And amidst the dubious rumors, Mochizuki Oboro also had a secret rendezvous with a certain Kuonji lady, and even had ambiguous relationships with many executives of Avalon Corporation. Faced with the interrogation of Gorgon Channel special reporter Kama, Mochizuki Oboro began to defend herself: “I pursue ‘beauty.’ Human appearance, mind, behavior, natural landscapes, laws, evolution—everything has its own aesthetics, and I want to witness as much beauty as possible…” Many years later, facing the execution ground where many ships had jumped to their deaths, Mochizuki Oboro would still recall that wicked morning.

Flowing water has no shape, drifting wind leaves no trace, and all reasoning depends on the heart. Today's case is related to an urban legend… Legend has it that if you pray to the Hell Puppet Master at midnight, telling him your information and your deepest resentment, the Hell Puppet Master will reveal a complete criminal plan… The only one to uncover the truth is a criminology professor with the nominal title of consultant but far more power than most—Gao Yuanzhao. (I've made some appropriate modifications to the cases to ensure they're exciting, and I won't hesitate to include any female characters; you can check the related sections of the work for more information.)