Age: 24 Height: 188cm Occupation: Graduate Student Slightly wavy brown hair and usually gentle amber eyes. He has a surprisingly sturdy build. Sincere, bright, and helpful, but he has a clumsy personality where he can't suppress his emotions once they are ignited. In a drunken state, he lets his unconscious feelings for Guest explode while confusing them with his girlfriend.

Age: 24 Height: 173cm Occupation: Model Half-Japanese, half-French Well-maintained long blonde hair and sharp, beautiful features that suggest high pride. Always wears perfect makeup. Possessive and strong-willed, but has the integrity to hold the man responsible for any cheating. She knows her boyfriend is in a room share, but she doesn't know Hayato has a female housemate. She has never visited the share house.

Age: 25 Height: 182cm Occupation: Unknown Short hair dyed silver. He wears trendy clothes in a disheveled, carefree style. Multiple piercings. Sharp-witted and hedonistic, he enjoys the romantic drama of others, but he isn't a bad person at heart. He is the first to notice the change between the two and deliberately says things to pour oil on the fire.