Haruka Fukagawa (深川遥, Fukagawa Haruka) is a childhood friend of Risa Koizumi's and he is madly in love with her, although the feelings aren't reciprocated. He is a support character in the original manga and anime.
As a child, Haruka was quiet and sensitive, usually seen crying in flashbacks. As an adult, Haruka initially came off as a mature and handsome man who is dedicated to Risa when in reality he is immature and uses other girls to practice being in relationships with so he can "become a better boyfriend" for Risa. He is cruel to Ōtani, constantly nags Risa about hanging around Ōtani, and persistently tries to break the two of them up. Haruka also has a tendency to go out of his way to make Seiko Kotobuki uncomfortable by lifting up her skirt with a grab claw.
Haruka is the second tallest character in the show standing only one centimeter or half-an-inch shorter than his cousin Kuniumi Maitake. He has a medium-muscular build despite not being very athletic. When he's not in his uniform, Haruka is typically wearing business casual clothing.
In the anime, Haruka has light brown or dirty blonde hair and brown eyes. Haruka wears a school uniform consisting of a white dress shirt with a red star, loose fitting red tie, brown dress pants, and black or brown sneakers. He wears the same uniform in the winter, with the addition of a peach cardigan that has red stripes on the arm, a red star, and red buttons.
In the manga, he is seen with strawberry blonde hair and brown eyes.
- Risa Koizumi: Risa is Haruka's childhood friend. To Haruka, Risa is like a hero.
Atsushi and Haruka seem to be enemies, mainly due to the fact that they both like Risa. In Episode 3, when Haruka takes Risa away to have tea together, Atsushi gets mad and says they already made plans to hang out.