

He is generally cold and disapproving towards his brother, though no one really knows why. Haruhiko Usami ( 宇佐見 春彦, Usami Haruhiko) Voiced by Kōsuke Toriumi (adult) Haruhiko Usami is Akihiko's 30-year-old half-brother (they have different mothers). Ritsu Onodera, the central protagonist of that series, was Usagi's editor prior to transferring to Marukawa. Usagi has a cameo in the first episode of the Junjou Romantica spin-off Sekai-ichi Hatsukoi. Once Takahiro moves away, Misaki and Usagi move in together, and go from roommates to lovers.

Misaki gets upset on Usagi's behalf, which leads Usagi to realize his true feelings-he is actually in love with Misaki, not Takahiro. Not long after meeting Misaki, he discovers Takahiro is engaged. Usagi is a close friend of Misaki's older brother, Takahiro, and secretly has feelings for him. His nickname is "Usagi" ( rabbit in Japanese). The seme to Misaki's uke, he is a prolific author of fiction and BL novels, not to mention the youngest recipient of the distinguished Naomori Award.

Akihiko Usami ( 宇佐見 秋彦, Usami Akihiko) Voiced by Hikaru Hanada and Rina Sato (child) Akihiko is twenty-eight at the beginning of the series, and he has turned thirty-one by the third season. Misaki, now a grad student at Mitsuhashi, got accepted into Marukawa after several interviews. With his so-called "Usa-mones," Misaki ends up attracting several of the Usami men, including Usagi's half-brother, Haruhiko, and his father, Fuyuhiko. Even after the two move in together, many challenges come their way. Because Misaki has an idealistic view of relationships, he is reluctant to admit his feelings for Usagi.

This professional relationship gradually evolves into a romantic one. After failing all his practice exams, Misaki's only choice is to ask Usagi to tutor him. This is because he still blames himself for his parents' deaths he thinks that if he hadn't asked them to hurry home that day, they wouldn't have had the accident. Although he seems childish and brash, he simply doesn't want to cause trouble for anyone else. He aspires to attend Mitsuhashi University, the college his brother turned down in order to care for him after their parents died. At the start of the series, Misaki is about to take his college entrance exams. He is eighteen years old at the start of the series, nineteen in episode 8 of the anime, and twenty-one in the third season. Characters Junjo Romantica Misaki Takahashi ( 高橋 美咲, Takahashi Misaki ) Voiced by Takahiro Sakurai Misaki Takahashi (the uke of the Romantica couple) is Takahiro's younger brother.
