Kamon Hiro (Hiro), who hates interacting with others, often criticizes people and things he dislikes. After reunited with her ex-boyfriend Yamura Chaoji, who abandoned her 25 years ago, she discovered that he was actually gay. Chaoji is still optimistic and enthusiastic, seemingly indifferent to the past, and even asked Hiro to marry him in order to comfort his seriously ill mother. The latter two officially started a life of pretending to be a couple as best friends.