Kai Shiromaru

Kai Shiromaru (白丸 甲斐, Shiromaru Kai) is the cousin of Yui Shiromaru.

Plot
Belonging to Year 1 class 2 and introduced in ch. 96, Kai Shiromaru joins the Astronomy Club as a first year student.

He falls asleep easily when looking at the starts in the night and is thus looking for tips to stay awake in the night.

While he has no interest in photography, he wants to the see the night sky in its full glory.

Etymology

 * The name Kai means "worth, avail, effect, result, use" (甲斐).
 * Kai's surname Shiromaru means "white circle" (白丸).