After years of separation, Mio Fukatani and Takahide Kujou, her former high school classmate, reunite. Although Mio has a keen interest in him, she dismisses the idea of a romantic relationship after discovering that Kujou is now a monk. However, after drowning her sorrows with alcohol and stumbling home, Kujou accompanies Mio to her doorstep unexpectedly. Upon entering her residence, Kujou's attraction towards Mio becomes obvious, culminating in a night of intense passion. As their connection deepens, Mio and Kujou anticipate experiencing countless moments of euphoria together.