|“||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, by the end of the series he eventually starts dating Tomo after defeating her father in a Karate fight.
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 quietethick, 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, 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.
He and Tomo are neighbors and friends since they were little. During Great-school he attended a different school, and he wasn't aware of Tomo being a girl until they enter Middle school and saw her with the girl's uniform but he seems to sometimes forget about this detail.
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.
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.
- He was not aware that Tomo was a girl until Elementry school