Jin Mitaka

Height: 178 cm

Weight: 65 kg

Jin is the resident of room 103. Jin is a third-year student of Suiko. He is Misaki's childhood friend and a playboy. He has dated several girls, including Misaki's elder sister, but in the end he breaks up with all of them.

[Spoiler] Jin has feelings for Misaki, but he feels he is not good enough to match her, so he ended up becoming a playboy. He finally becomes a couple with Misaki during the fifth novel. He wants to become a playwright, and later attends a university in Osaka to achieve his goal. To pacify Misaki, he gives her a marriage registration form with his signature as a warranty, but Misaki ends up turning it in after his departure on the same day, which makes them officially married. [/Spoiler]

(Source: Wikipedia)