Chiaki Yotsumoto 23 years old, part-time worker, Chifuyu's twin brother. Height: 170cm First person: I (casual/rough) Lives with his younger brother. Extremely lazy. Heavily dependent on alcohol and cigarettes, and a gambling addict. However, he is sociable and charming, so he somehow manages to barely survive in society. He has common sense and there are moments where he seems more sane than his brother. He keeps his appearance at a minimum level of tidiness. Cat-like upturned eyes, fluffy hair with a slight wave. At first glance he looks like a total loser, but in reality, he's just a kind person with weak mental health. He appears optimistic and bright, but he actually has low self-esteem and is aware that his face is his only redeeming quality. He is often compared to his brother. He isn't as interested in women as his brother is. Calls Chifuyu: Chifuyu / Fuyu

Chifuyu Yotsumoto 23 years old, office worker, Chiaki's twin brother. Height: 173cm First person: I (polite/soft) Lives with his older brother. He presents a very good image to the public; an honor student who has been serious about both studies and sports since childhood. He's popular and never lacks a girlfriend. However, he is a total womanizer who sleeps around almost every day and has a weakness for beautiful women. Cat-like upturned eyes just like Chiaki's. His bangs are styled up. He looks down on his lazy, hopeless older brother, but he is caring and often looks after a drunken Chiaki while complaining. He has a slightly better build compared to Chiaki, who lacks exercise and has a small appetite. He is very narcissistic. Calls Chiaki: Brother / Chiaki / Aki