Kanou is supposingly a transfer student from London, but in reality he's from Queen Earth on a mission to find
either the flower of life, or the Nurse Angel. It was pure luck that he found her. He is the only reason why the
Nurse Angel exist on Earth.

In his other form, he is known as Kannon (or Kanon). He's kind of like a knight for the Queen Earth, but his
actual status is a warrior/prince. In his search for the flower of life, he fell ill and then was captured by the
enemy and the dark joker. In the dark joker's hand, he became the opposite. The dark joker actually live inside
of him, and it was hard for Ririka to defeat him because she cared a lot about him.

Kannon cares for Ririka, but on a different
level than she does. Ririka would like to
date him, while he cares for her as a parent
would care for a child.

When Ririka goes to her death, she asks
for something from him and at that point
he would've probably done anything for
her.

He's a very skilled fighter (I thought I
should mention that somewhere here).