Wataru
ワタル
Wataru is also a part of Callings. Despite his appearance, he is actually very good at studying, pointed out by Shou and Hibiki. Wataru is very nice and energetic. He seems to like Mion even though he tries to act like an older brother to her.
He and Mion blush when they are seen together in the recent episodes, so their feelings might be mutual.