If you look at the raws (authors twitter + pixiv), at least to me, I don’t think any NTR goes on, though that’s coming from an English-only speaker. I could be wrong but from what I can piece together I think we’re safe boys
@FStubbs yeah you’re right about that, although it’s almost always either a tsundere or a super lovey dovey girl in these kinds of manga. Maybe even a harem