Houkago Killing Time

High school student Yuuki is a quiet and reserved boy who spends his days avoiding attention. His classmate, the popular and outgoing Saki, notices him and decides to approach him after school. What starts as an innocent conversation quickly turns into a secret and intense relationship between the two. As they spend more time together, their hidden desires begin to surface, leading them into a world of passion and exploration. The story follows their encounters and the growing bond that forms between them in the privacy of the classroom after hours.