Shuuto Kimura

Shutto Kimura is Hatsune Kawamura's fiance and a teacher in the high school attended by Yuuki Kamiyama and Futaba Kawamura. He was formerly a lead guitarist in a band Garden Plot and was greatly admired by Yuuki. He was also Futaba's crush since he tutored her for the high school entrance exam.

Personality
He was formerly a problem child during high school. But his attitude changed when he had to help out at a farm for a month in lieu of expulsion for his antics. When he saw the crops grow as a fruit of his labour, his worldview changed. In the present, he is a very reasonable person and a great teacher who aims to influence children with his music.

Hatsune Kawamura
Hatsune is the girlfriend and later fiancé of Shuuto. They have been dating since college and are equally faithful and loving to one-another.

Futaba Kawamura
Shuuto tutored Futaba during her high school entrance exams and it was he who helped her cope with the anxiety of it. Futaba is deeply grateful for his help during such trying times and it was then that she developed a crush on him. Shuuto, however, looks at Futaba as no more than a sister and a student and has been wholly devoted to Hatsune from the start. Despite knowing all this, Futaba confessed to him so that she could finally end her one-sided love.

Yuuki Kamiyama
Yuuki was a huge fan of Shuuto during his Garden Plot days, but he became disillusioned when he saw that Shuuto had no aspirations for music anymore. He tagged him as a simpleton and someone who would not advance anymore in his life. This harsh opinion of his led to his conflict with Futaba. However, when Yuuki finally came to know about Shuuto's past and how that shaped him into the man he is today, he apologized to him and reconciled with Futaba.