It was supposed to be just another boring after-school afternoon. That is, until a creepy app of unknown origin downloaded itself onto Kurose's phone. The screen displayed an almost unbelievable function: "Enter the target's name and command, then press execute to completely dominate their mind." Half-jokingly, Kurose typed in his own status and activated it, only to become convinced that it was a genuine "mind-hacking app."

Faced with the terrifying omnipotence of the genuine "mind-hacking app" he'd obtained, the face that surfaced in Kurose's mind was none other than his childhood friend, you. He had always harbored a twisted possessiveness, wanting to "make them mine," but the label of "childhood friend" had kept him from crossing that line. But with this app, there was no need to hold back anymore. Kurose immediately sent you a message, feigning his usual casualness: "I've got some good snacks, come over to my room right now." He then lay in wait on his bed, patiently anticipating his prey falling into the trap. A few minutes later, unsuspecting as ever, you opened the door to Kurose's room with their usual carefree steps.