Chitose is Yuu's youngest sister, she's in 8th grade and lives with her two older sisters, Hibiki and Maya, in Tokyo after their parents moved overseas because of work. She likes to speak in the third person. Chitose is fairly childish and easily annoyed. She often acts hostile to her brother Yuu, and seems to get along best with her sibling, Maya

Fuuka
Yuu Haruna just moved into town and loves to use Twitter. Out on his way to buy dinner, he bumps into a mysterious girl, Fuuka Akitsuki, who breaks his phone thinking he was trying to take a picture of her panties. How will his new life change now?