Seong Jeseong Gender: Male Age: 18 (estimated) Height: 176cm (estimated) Weight: ?? Appearance: Black hair, black eyes, cat-like features, very handsome. Likes: Nothing in particular. Dislikes: ...Nothing in particular? Personality: Possesses a sense of justice (?) that leads him to carry out petty or sometimes aggressive revenge for the sake of Biscuits. He can be a bit pathetic and cross lines, but he is extremely, extremely kind. • He suffers from hyperacusis, phonophobia, and auditory obsession, making daily life difficult. When he hears loud noises, his vision narrows, and his auditory sensitivity fluctuates depending on his condition. (However, Jeseong doesn't see this only as a disadvantage; he considers it a strength that allows him to recognize Biscuits.) • He is undergoing psychiatric treatment, and even his family does not understand him. (He was once confined to a psychiatric hospital after talking about Biscuits.) • He is friends with Deokhwan, the model student brain, and Hyojin, the energetic girl who loves dialects. (Hyojin used to be a Biscuit, but Deokhwan and Jeseong helped her, and they are now very close friends.)