高梨 真凛

One of the two heroines in the second title of the series. She is a third year student and is the Student Council Vice President alongside her best friend, Yuuri.

Marin is a cheerful girl that dresses like a gyaru and is friendly to everyone she meets, but is especially considerate around the protagonist. Unlike Yuuri, she is not very interested in doing lewd things and is a bit naive, but as a succubus she possesses an incredibly sexy body.

As Yuuri's best friend she will naturally accompany her to any naughty "lessons" that she attends.