Junichirou Kubota
Jun full manga
Kanji 久保田 淳一郎
Romanji Kubota Jun'ichirō
Gender Male
Age 15 (until Chapter 755)
16 (after Chapter 755)
Birthday October
Hair Black
Eyes Black
Weight ~80kg
Personal Status
Status Alive
Relatives Junichirou's mother
Professional Status
Occupation Student
Affiliation Aizawa Dojo
Manga Chapter 1
I've made up my mind. There's no going back now. I'm in love with Tomo.

—Junichirou Kubota, Chapter 841

Junichirou Kubota (久保田 淳一郎, Kubota Jun'ichirō?) is the deuteragonist of Tomo-chan wa Onnanoko! Tomo Aizawa has a crush on him, but he initially doesn't seem to notice her feelings. Later in the series, he started to develop feelings for her.


Jun is very tall with black hair and black eyes. Misuzu teases him about his height, calling him things like "Giant Deadwood". While wearing his school uniform it is usually disheveled with his shirt untucked and tie loose. During his middle school years his eyebrows were quiet thick, they seem to of gotten slightly thinner by the time he is in high school.


When Junichirou is around Tomo, he's playful, slightly aggressive and somewhat clingy towards her. Misuzu remarks that he only really smiles when he's around Tomo. However when he's without Tomo, according to Misuzu[1], Junichirou comes off as cool and aloof to the rest of the school's population (which makes him popular among girls). He rarely smiles and seems to be easily bored.






Tomo Aizawa

He used to treat Tomo like a guy, he didn't even know she was a girl until they went to the same middle school together. He enjoys spending time with Tomo and thinks of her as his best friend. When they fight they don't hold back and always use their full strength against each other. regarding Tomo, he seemed oblivious to her feelings of him, but shortly after the school's cultural festival he's looking at Tomo as a girl and has appeared to of developed the same feelings for her.

Misuzu Gundou

Him and Misuzu do not get along at all. They went out together in their second year of middle school but could only stand three days of each other before they broke up. They've been bitter towards each other ever since.


  • During the midterm exams Jun placed 54th on the leaderboard.[2]



  1. Tomo-chan wa Onnanoko! Chapter 121
  2. Tomo-chan wa Onnanoko! Chapter 313