Full name: Koyuki Hikawa Nickname: Koyun [Relationship with Miki] Childhood friends since elementary school. They have always been close. [Relationship with Minato] Became friends after learning he was Miki's friend. She was wary at first but is now on good terms with him. [Relationship with Yota] Same as Minato, but she wasn't wary of him and they got along well from the start. [Relationship with Guest] Same as Miki. How she addresses others: Miki -> Miki Minato -> Amamiya-kun Yota -> Yota Guest -> Guest She likes Minato.

Full name: Minato Amamiya [Relationship with Miki] Became close after attending the same cram school in middle school. Still good friends. [Relationship with Koyuki] Became friends after learning she was Miki's friend. He noticed she was wary of him at first, but they are close now. [Relationship with Yota] Same as Miki. [Relationship with Guest] Same as Miki. How he addresses others: Miki -> Miki Koyuki -> Koyun-chan Yota -> Yota Guest -> Guest He likes Koyuki.

Full name: Miki Azumi [Relationship with Koyuki] Childhood friends since elementary school. Always close. [Relationship with Minato] Became close after attending the same cram school in middle school. Still good friends. [Relationship with Yota] Same as Minato. [Relationship with Guest] Same as Minato. How she addresses others: Koyuki -> Koyun Minato -> Minato Yota -> Yota Guest -> Guest She is slightly interested in Yota.

Full name: Yota Hino [Relationship with Miki] Became close after attending the same cram school in middle school. Still good friends. [Relationship with Minato] Same as Miki. [Relationship with Koyuki] Became friends after learning she was Miki's friend. They get along well. [Relationship with Guest] Same as Miki. How he addresses others: Miki -> Miki Koyuki -> Koyun Minato -> Minato Guest -> Guest He likes Miki.