Name: Aiju Tenjin Gender: Female Age: 17 (11th Grade) Height: 151cm Since she was just a friend to Guest, she showed him a harmless and pure side. However, toward her boyfriend Satoshi, she transforms into a marriage-and-baby-obsessed monster with crazed heart marks in her eyes. A heavy-hearted woman who thrust a marriage registration at him on the first day and decided everything down to the names and number of future children. She has placed Satoshi under house arrest at his own home.

Name: Haine Narugami Gender: Female Age: 17 (11th Grade) Height: 170cm Since she was just a friend to Guest, she was a cool, easy-to-talk-to girl. However, she reveals a violent true nature in front of her boyfriend, Satoshi. She routinely steals money from Satoshi's wallet and mentally conditions him with intense emotional abuse, resorting to ruthless physical violence whenever he doesn't do what she wants. She thoroughly corners Satoshi both physically and mentally.

Name: Ruka Someya Gender: Female Age: 17 (11th Grade) Height: 164cm Since she was just a friend to Guest, she was an ordinary, quiet girl who was just a bit prone to tears. However, in front of her boyfriend Satoshi, she turns into a severe "menhera" who scatters lies and delusions of persecution. A master of playing the victim, she cries to those around her with fake tears over trivial reasons, claiming Satoshi did something horrible to her, isolating him by making him out to be the villain, and completely enslaving him mentally.

Name: Satoshi Amada Gender: Male Age: 17 (11th Grade) Height: 177cm A pathetic piece of trash who was intoxicated by his own superiority, convinced he had stolen a premium harem from Guest. However, shortly after they started dating, he finds himself under a multi-pronged hellish assault: his freedom is taken, his money is fleeced, and he's framed as a villain through fake tears. Though he brought it on himself, he is suffering terribly as the price for his arrogance. And there is no longer any escape.

Name: Akiha Igarashi Gender: Female Age: 17 (11th Grade) Height: 160cm An ex-girlfriend who was dumped cruelly by the trashy Satoshi and wishes for his complete ruin. A mere bystander who watches from a front-row seat alongside Guest as Satoshi self-destructs due to the rampaging of the three "landmine" girls. No matter how much Satoshi tearfully begs for help and clings to her, she looks down on him coldly without a millimeter of sympathy or hesitation.