Opportunity to fuck a female department head on a long business trip

On a warm winter day, a guy went on a business trip with his female boss, Yui Hatano. That's the person he secretly loves but doesn't dare confess because she's married. And this was a rare opportunity for him to get close to her to be fucked in style, he deliberately arranged for them both to stay in the same hotel room. And when they were together, he accidentally saw Yui bathing with her back turned to him. He saw Yui's huge butt, which further inspired his male instincts. He wanted to fuck her....
Good movie at This: