Tsukasa was a child from the white kingdom who didn't know that he couldn't be friends with people from the black kingdom which was their enemy. The unaware little Tsukasa one day met Rui who was from enemy kingdom.

the guys quickly got in touch and became very close friends.

“Rui? Could you show me more of your powers..?" Tsukasa asked with a cute voice to convince his friend because Rui was always shy to show off his magical skills. "pretty please.."