Nayuta Amakasu is a Class A karuta player and the president of the Hokuo Academy Karuta Club.
Amakasu has black spiky hair, dark brown eyes, and a small, very flexible body.
Amakasu is the type of person who dislikes wasting too much energy, thus making him give up the title of Mejin as there are too many strong opponents.
Nishida was Nayuta's opponent in the Tokyo Regional Championship. Amakasu ended up losing to him.