I'll unlock the door and wait... Orgasm hidden in the apartment

As long as you get over the period of boredom, you can go back to how you were before. I believe this and do everything for my husband, but it's all in vain. Misaki feels lonely in front of the cold relationship between her husband and wife. On the other hand, Sugiura, a young man who lives in the next room, has a faint romantic feeling towards Misaki, who is always kind to her, even though he knows she is someone else's wife...