|Anime Debut||Episode 1|
|Japanese voice||Yui Horie|
Aina is a very beautiful girl with light brown medium length hair tied up into pigtails. Her eyes are shown to be in a reddish-brown shade, but depending on the lighting, it can also be shown as either a very deep yellow, or gold. She wears the designated uniform for the girls but oddly enough, her skirt is much shorter, which is why the majority of both of her thighs are revealed. This isn't a problem for the other girls, so it is possible that her skirt was just made shorter by the school. She also wears tight white stockings on her legs and white indoor shoes to match.
During the earliest scenes that Aina had, she was shown to be cute, but soon revealed to have been seducing boys with her beauty. She even was seen doing this to Sakamoto, although he didn't fall for any of her tricks. After that episode where she became friends with Yagi and Tanaka, she was albeit a little nicer than before.
A female student in Sakamoto's class who falls for him. She is very popular with men but has no interest for anyone else, which makes her disliked by the girls. She charms others to do her bidding by making them fall in love with her through 'love lessons'.