Yuki

Brief Description
Yuki was once a main character but is now a retired main character. He has undergone a lot of character development and personality change over the years, so much so that if you compared both what he was and what he is now, you wouldn't tell they ever were the same person. Rui, Snowy and Hotaru and contributed a lot for that change. Yuki is king of his own kingdom. He's calm and friendly.