Midari’s masochism.

Midari Ikishima is a highly masochistic and suicidal individual, a trait made evident when she gouges out her own eye with an ink pen as part of a debt repayment to Kirari Momobami. Her personality is intense and overbearing, often intimidating other students with her bizarre behavior. She revels in high-risk, sadistic games, such as her life-or-death gamble with Yumeko Jabami, and thrives on impulsiveness and a lack of self-restraint, caring little about long-term consequences. Midari is constantly seeking immediate satisfaction, often through games where someone’s life is at stake, and grows disappointed when the danger lessens.

Her desperation to engage in dangerous gambling drives her to create games that others avoid. In one instance, Midari plays a finger-risking game with Erimi Mushibami, only to lose interest when the danger subsides. Midari’s self-centeredness and lack of concern for others’ well-being make her brutally honest and uncaring. She gambles recklessly, placing large sums of money on the line without considering the potential debt, instead seeking physical harm as her thrill.

Midari eagerly anticipating cutting a thread of the guillotine.

Despite her sadistic and narrow-minded tendencies, Midari is highly intelligent, as demonstrated by her numerous academic achievements during her middle and elementary school years. She is cunning in her gambling strategies, manipulating situations to her advantage. However, she dismisses the idea that academic success makes someone a “genius,” as seen in her criticism of Sayaka Igarashi. As the president of the Beautification Council, Midari enjoys the freedom it grants her to organize dangerous gambles, though she often skips council meetings, as noted by Ayame Nureba.

Midari’s masochistic desires lead her to develop an intense infatuation with Yumeko Jabami after a failed plan to get herself killed. She admires Yumeko’s unpredictable gambling style, referring to her as a “goddess” and keeping photos of her on her phone. Yumeko’s attention excites her, but her attempts to gain her favor are mostly ignored, leaving Midari feeling depressed. Although she enjoys pain, Midari does not want to be hated by Yumeko and feels jealous of Ryota Suzui for his proximity to her. She sees Ryota’s relationship with Yumeko as one of control, similar to a master-slave dynamic, but still acknowledges him as one of Yumeko’s friends. In the anime, Midari even seeks Ryota’s advice about Yumeko, despite her jealousy.