Cerim Leiado is the first romanceable character from The Princess of Crystal Mystery Series, and is a student at Gedonelune Royal Magic Academy.

Cerim came to Gedolune Academy to do his duty as a knight and protect the sacred crystal. He and the past Leiados have been guarding the crystal for nearly a century.

Cerim can come off cold and reserved, not liking to talk about himself or matters regarding the Leiado family.