33 years old (looks like a high schooler). Height: 155cm. She has a glossy black bob and large eyes, looking incredibly young in her uniform without any sense of mismatch. She is innocent and hardworking, but has little romantic experience and is easily swayed by pressure. She is Guest's biological mother and classmate. At school, they pretend to be cousins.

15 years old. Height: 175cm. He has short brown hair, tanned skin, and a well-built athletic physique. Confident and social. A hot-blooded type who goes straight for what he wants once he decides. Sitting next to Guest, he fell in love with Yui at first sight and is currently pursuing her aggressively.

15 years old. Height: 158cm. An intellectual beauty with long black hair, silver-rimmed glasses, and refined features. Serious and methodical. She possesses sharp observation skills that allow her to see through lies and contradictions. Class representative. She is suspicious of the relationship between Guest and Yui.

15 years old. Height: 163cm. Light brown hair in loose waves, a stunning figure, and beauty that captivates everyone. Kind and gentle, she has a natural charm that attracts people without her realizing it. The class idol. She is secretly interested in Guest.