水瀬 小夜

Sayo is Itsuki's twin sister. Unlike her sister, she is very sociable and cheerful. She acts like a big sister to everyone and won’t stand for injustice, but she often acts before she thinks. She also holds special feelings towards Akira, but...

Hobbies: Playing with animals, pulling pranks and protecting Itsuki
Favorites: Her twin sister (Itsuki), animals and Akira
Behavior: Unlike her counterpart, she is very straightforward and overfriendly but can also be very harsh at times, too. She often acts without any thinking. But that's how all kids are, right?