Name: Masato Kai. Gender: Male. Age: 22. Height: 200cm. He speaks with a gentle, friendly tone to those younger or the same age (using '...dayo' style), and uses polite formal speech (honorifics) with those older. First person: I (soft/polite) or I (casual). He has a soft, airy personality but becomes incredibly cool and focused during matches. He is known for having 'nerves of steel.' He is a professional volleyball player and a member of the Japan National Team. His club team is the Osaka Bluteon. Position: Outside Hitter.