Because nothing good would have came up from it.
He's still their boss and we all know how japanese work harassment hardcore is. He could have thrown them out or make them being in way worse. You saw how they can't say no to him when he tried to get them in private. Its disgusting but that's life.
So since nothing happpened and she turned him down and got ''saved'' she picked the safest choice which was not saying anything. She doesn't have any proof and nobody would have believed her since he would have probably claimed ''its my gf!/ex-gf'' and the other dude would have popped with ''but im his bf'' and then she would have been slutshamed. Harassed and all the bad stuff that comes with it from a japanese office.
So no. Its sad but that's life.
So, basically, you're saying no matter what the jerk does to her, she should not tell her boyfriend? He rapes her once a week on the pretext of working overtime, and she shouldn't tell her boyfriend? That's some fucked up thinking you got there.
Navigating this maze is in the top five of things that I actively hate about being an adult woman. It's all a trap. There is absolutely no way to get out without taking damage - it shouldn't be like that, but it is.
I am deeply envious (without malice!) of other women who are able to straighten up and call it bullshit like it is. I am severely lacking in trust that someone beside myself would be speaking on my behalf. And the one thing that men DID teach me, mercilessly and insistently, is that they stand together, above law, above moral.
And then it becomes hitting the pot in a minefield.
Yes, the men (like Andou and Kumagai) in this story really are degenerate lettuces.
Yes, they are only fictional.
But yes - I've met worse.
The fucking jerk woulda probably raped her then and there if Yachi had not shown up, but she tells him the asshole did nothing even though she was scared out of her wits? I really hate that shit. Stupid woman.