Danchizuma: Furin no Hate.

Masami and Kasamatsu are passionately seeking each other in an apartment in a corner of the downtown area along the Sumida River. They had an affair. They declared divorce to their respective spouses and began living in this apartment in search of a love nest just for the two of them. However, there was no way that her new life after being unfaithful would go well from the beginning...