The couples Yuka and Kentarou live next to each other in an apartment building. Unlike Kentarou, who is devoted to his wife, Yuka's husband behaves tyrannically, causing her to be utterly exhausted. Kentarou cares for her, but as he becomes her confidant, he can no longer suppress the affection he has long harbored and ends up embracing Yuka tightly… Yuka also opens her heart to Kentarou's passionate yet gentle embrace, and eventually, despite both having their own families, they engage in a physical relationship. This relationship grows more intimate with each passing day…
