Forgive me... Married woman embraced by her husband's subordinate

Mao is concerned about her husband Ryosuke, who has been worried about her recent decline in energy, saying, "Because she's busy." That being said, Mao was hurt by her, thinking that she might not be attractive inside. Ryosuke's subordinate Murata visits the two of them, and seduces Mao as an opportunity to seduce the couple, who are troubled by sexlessness. Mao refuses, but Murata is forced and approached by a wild and wild look...