Ookami Shounen Magami-kun

Passing by the riverside at twilight, Mahiru sees a beautiful boy. The next day, she meets him again as a high school classmate. The boy, Shio, is a bit of a mystery, but for some reason he seems to be interested in the shadowy Mahiru. One day, Mahiru discovers a big secret about Shio's family! A pure and simple story of different races and friendships. (Source: Comic Zenon, translated)