Ryouta Satou  

, 佐藤 リョータ

Ryouta is the main character of the series and has had feelings for Chika since childhood. The two used to play together and even shared a bed when they were young. They made a promise to marry each other as adults. Ryouta is friends with Kouji, Tsubasa Kawai, and enjoys playing games and eating with them. Although he's not very smart, he's kind-hearted and tries to help others whenever possible, which often puts him in awkward situations that earn him beatings from Chika or Yuuki. He doesn't understand the desires of typical males and is uninterested in relationships between men and women. When Ryouta falls asleep, it can be difficult to wake him up. Additionally, he has trouble sleeping and frequently tosses and turns while asleep. His seat number is 12.