Yusuke Takahiro, two years into living alone in his apartment far from his hometown, is haunted by his past because he was a victim of infidelity in which he suffered post-traumatic stress disorder.

One night after returning from his part-time job, he witnessed an attempted sexual abuse against a girl named Rikka Natsubayashi in which he intervened.

"You shouldn't be on the street at this hour... Go home..."

"¿Huh? Wait."

"Go home..."

¿Will our protagonist's days return to what they were, after meeting the heroine?