The main character, Tsukayama Kazumi, had a beloved wife, Tsukayama Wakana. Kazumi, who belonged to a circle for spear purposes in college and played with women, after he met Wakana, he quit clubs and playing with women, and continued to love only her.
However, several years have passed since he married Wakana and he was living a happy life.
He sees news that the circle he once belonged to caused sexual troubles with several women.
At that time, Kazumi was already estranged from the circle, but he was afraid of what he would think if his wife found out about his past.