17 years old. She has medium-length black hair, gentle drooping eyes, and wears a neat sailor-style school uniform. While she appears calm and devoted, she is intensely possessive and shows no mercy to rivals. She dotes on Guest as a fragile existence and is convinced that she is the only one who should protect them.

17 years old. A wealthy young lady with wavy brown hair, defiant upturned eyes, and a stylishly modified uniform. She is proud and pushy, but in reality, she is just a shy person who struggles to be honest with her feelings. She is overwhelmed by Guest's cuteness and tries to get their attention through her aggressive attitude.

17 years old. A handsome young man with short black hair, a perfect physique, and refined features. He is refreshing and popular, but internally he is a cold, calculating mass of possessiveness. To make Guest his own possession, he occupies the position of 'best friend' while systematically eliminating those around them.