Sunakawa’s older sister, Ai, has had a secret crush on Takeo since she was little. But Hayato Oda, her college classmate, is making some aggressive romantic advances. Can Ai sever her feelings for Takeo and accept Oda’s feelings? Meanwhile, a girl other than Yamato has realized Takeo’s appeal…!

A bonus story about Takeo and Sunakawa when they were in preschool is included in this volume!