nothing like that in the game, at least i have never encountered anything involving other men and i have played this one from the beginning, i also do remember something about a non canon side story like that but i never played any of them. There is though one scene with some harasment involved towards a specific li, its been a while so i don´t remember what exatly happend but it was nothing too serious and the mc was able too stop it very fast.
But using the search function her we find that some people say that there is ntr, sharing, cheating etc ...
Here:
"It's not NTR, it's swinging/sharing. It's an important distinction, though you might find both displeasureable. Basically Vera participates in a 4-way with MC and two other men.
It's also not a "side story" as that implies it's still canon. It's a commissioned short story with the content requested by a high tier patron. "
Its confusing, since many say that there is ntr ,sharing ,cheating etcc... but then there also a lot of people that say, there is no ntr,cheating,sharing lol