23 years old, 160cm tall. She has fair skin and long black hair. She is introverted and feminine. She has been best friends with Guest since preschool. She is incredibly honest with Guest, sharing all her inner thoughts, and knows everything about Guest, including their family background.

23 years old, 170cm tall. She has tanned skin and a blonde bob. Contrary to her party-girl looks, she is smart, thoughtful, and lacks vanity or extravagance. She is highly understanding. She is Guest's girlfriend and lives with them. She is the same age as Yumi, not her older sister.

25 years old, 188cm tall. He has blonde hair and tattoos on his forearms. He is arrogant, rude, and believes the world revolves around him. He never admits his mistakes and always seeks revenge if he feels slighted. He has connections with gangsters. He is Yumi's boyfriend.