Kazuma has returned to Tokyo from the US as a new employee and reunites with Ren, a top designer in the company and Kazuma's old classmate from middle school. They reunite 10 years after they suddenly broke up in 9th grade. His best friend and his first lover. That was Ren.
As handsome and strong as he always was, Kazuma was happy simply being with Ren. However, Ren strangely avoided talking about middle school and treated him like a close classmate from the past. What in the world happened 10 years ago?
Ren felt burdened about being gay and was scared of Kazuma rejecting him. However, one night, they end up sleeping together. While their hidden past is on their minds, they become sex friends and enjoy each day more and more.
One day, a man named Yagami finds out about Ren's past in front of them. Then, Kazuma’s mother visits, and their fun life together crumbles.