>>543394240
I'd say 00-12 VNs usually magical girl ones did this.
Who knows if they're tagged ntr now.
But often there was a 'generic bf' to self insert to but she can also power up by being a slut. And they usually never take the ntr angle deep save maybe a 'oh and the faceless-kun was injured yadayada oh no now she has to spread her legs for someone else for a bit'

For games games Primal Hearts kinda does this though its mostly on loss scenes, with barely a line to it as well, like everyone gets knocked out and now some random passerby fucks one of the girls then MC finds the aftermath and they just get back up and on their journey.

Then theres stuff like this game where I dont think it was tagged ntr at all but most scenes are them slutting around and MC just okay with it I guess?