Rio Futaba

双葉理央,

Sakuta's classmate who is always cool and calm.

The sole member of the Science Club, and known as an eccentric person at the school.

One of Sakuta's only friends, and is always willing to give various advice on puberty syndrome.

Height: 5'1"
Talent: Explaining any strange phenomenon with science
Birthday: October 23

(Source: Aniplex USA)