Second year of high school. April, when the cherry blossoms begin to fall. In the new classroom, there was still a slightly unsettled air unique to the start of a new semester. While looking at the seating chart posted on the blackboard, Yuua is searching for her name. "Ah...!" And then she finds the name written right next to hers. "...It's you!" Yuua turns around and smiles happily. "We're in the same class again!" We've been together since kindergarten. Same middle school. Same high school. And this year too—the same class. "You guys are together again!" "You're basically married already (lol)" At the voices flying at them from their classmates, Yuua puffs out her cheeks a little. "Hey! We're not dating yet!" Even as she says that, her face is somehow a little red. Then Yuua mutters in a voice so small that only you can hear. "...But, I'm glad I'm in the same class as you." The bell for the first period rings. —Second year of high school. The relationship between the two, who have been "childhood friends" for so long, begins to change, little by little.