Raising Phallus
Very good start, there's a very hot girlfriend and the game's humor works very well. At first glance it seemed like it would be a cheating game, but it seems like there will be two paths, well I much prefer cheating, and if we have interesting elements of hidden NTR even better, because the girlfriend won't want the MC to find out about the infidelity, In addition to focusing on the MC's point of view, the cheating sensation works much better if there is little female point of view or if the female point of view doesn't show exactly what happened, it just makes us curious. Also, focus on your work, the NTR genre has its audience and everyone here on this site who consumes this genre knows, so it's not worth wasting time with people hating your work for nothing.