A cuckold wife who can't even make a sound and gets wet with shame

Yuuki, who married a colleague at work, and the newlyweds, are living picturesque and happy days. However, Yuki is forced to have a physical relationship within the company after being held back by another colleague. Just a wall is separated by her husband and employees... Yuuki, who is never to be found out, suppresses her voice even as she is raped by someone other than her husband, and while enduring the shame of hell, she begins to feel pleasure from the thrill...