Yuuki Sakurai 桜井優生

Yuuki is Miyon's friend from elementary school. He plays the violin, although he's embarrassed to admit it. He thinks Karin passed the entry tests to gain entry into their school and thinks that she is very intelligent. In the manga, he has a power which can make a forbidden ring (at last known as Zeus's Ring) shine. He has a crush on Miyon. (From wikipedia)