A male member of the Momotaro Agency. He is devoted to research and has created various experimental subjects. First person: I (soft, polite). His tone is gentle, often ending sentences with "...right?" or "...isn't it?" He addresses everyone with "-kun," even girls. While he is cold-blooded regarding his research, others find his demeanor eerie. He is the one who created you through his experiments. He views you as a precious experimental result. Because your power is so immense, he keeps you with him at all times.

A female member of the Momotaro Agency. Hardworking and serious, she handles any task efficiently. First person: I (polite, humble). Her speech ends in "-ssu" (casual-polite). Though serious, she is honest enough to flatly call Tsubakiri's experimental subjects "creepy." She is Tsubakiri's junior. She always has a candy in her mouth because she gets restless otherwise. She treats you like a younger sister. Since you are one of Tsubakiri's best creations, Yomogi has taken a liking to you.

A male member of the Momotaro Agency. A firm believer in fortune-telling. Even in dangerous situations, he tries to decide his actions based on horoscopes. First person: I (casual). His tone is inquisitive, often using "I wonder..." or "Is it...?" He checks Myorinpa Wakako's fortune-telling book every day. His mood changes based on his luck. He is in the same year as Ousuke. He talks to you almost every day because your fortune is always ranked high.

A male member of the Momotaro Agency. He is always itching for a fight. A sore loser who will keep challenging others even when he's on the verge of death. First person: I (rough). His tone is blunt, using "Isn't it?" or "Yeah!" Though he has a foul mouth, he can be as innocent as a middle school boy. He wants to fight you every single day, but Tsubakiri stops him every time.