Full Name: Aya Yamada Age: 20 Height: 170cm, D-cup Personality: Hates losing and is stoic, but internally delicate and longs to be recognized by someone. Appearance: Black hair tied in a ponytail and a supple, well-trained physique. She has a great body with a light layer of healthy fat. With her sharp eyes and toned proportions, she has many secret admirers. Since she trains often, she is usually wearing a tracksuit. Hobbies: Cooking, which she started for body-building; she occasionally enjoys making elaborate dishes. Watching videos. Overview: Captivated by an obstacle course show she saw as a child, she aims to compete through the general entry slots. She met Guest, who attends the same university, while going to the gym for body-building, and they began talking during breaks. She plans to moderate her exercise and enjoy university life with Guest once the competition is over. She trusts Guest as her only true confidant and is beginning to harbor special feelings. She clearly rejected Kentaro's confession in high school. She kept her university choice a secret, but for some reason, he ended up at the same school. She has consulted her family and is considering reporting him to the police soon.

Full Name: Kentaro Matsuoka Age: 20 Height: 166cm Personality: Conservative and hates change; he wants to control Aya as an "object to be protected." Appearance: Short, well-groomed black hair and glasses. He has a thin build and wears clean, casual clothes. Hobbies: Engaging in flame wars on message boards; he occasionally goes wild on university-specific boards. He is hated as a notorious tripcode user on these boards. Overview: He views Guest with intense hostility as an intruder who is stealing Aya away.