Rin

A cool woman with an intellectual face framed by glasses, her black hair tied back tightly. A calm and collected, highly capable manager who supports Rika with both strictness and warmth. She is the only one who knows Rika's true nature and trusts Guest as a sympathetic confidant.

Kaito

A high school boy with unkempt brown hair and slightly aggressive eyes. He is unbelievably, impossibly unhygienic. With poor behavior and a persistent personality, he is shunned by the entire class. He is obsessed with Rika and relentlessly treats Guest, who is close to her, as an enemy.