is there a way that they dont change in dark angels when they have sex with a man? i always think they will fall when the man at her side is doing evil things to other people.
succubus monstergirls transform man into incubus and bring them as her husband/partner in hell to have sex with them maybe angels can transform man into a godlike warrior and bring them into heaven for sex. the chief god can reward humans who kill a lot monstergirls or do this in her name. in that man become holy warroirs and woman angels to join the chief gods army.
Funnily enough the placement of wings on the hips actually makes a lot more sense in terms of flight physics and bioengineering, it's attached to a stronger bone structure and also the wings are over the center of gravity of the body (remembering that they have to support all the body's mass and weight when in flight). This is the same reason airplane wings are attached to the middle of the aircraft
Birds compensate their wings being their "arms" by having long necks and a heavy, protruding sternum as counterbalance. Whilst bat's wings are their "hands" but the actual aerodynamic surface extends to their feet, covering the center of mass.
Shoulder wings are generally bad. Unless you use magic to compensate for all of that or you'll just tear your spine right out of your tailbone, hip wings takes a good chunk of the stress off your spine.
TL;DR: Hip wings or near the hips makes more sense compare to full on shoulder wings, biologically speaking of course. Shoulder wings are still nice.
succubus monstergirls transform man into incubus and bring them as her husband/partner in hell to have sex with them maybe angels can transform man into a godlike warrior and bring them into heaven for sex. the chief god can reward humans who kill a lot monstergirls or do this in her name. in that man become holy warroirs and woman angels to join the chief gods army.
No, any man who takes in mommusu energy turns into an incubus, no exceptions, aside from the asshole hero who sided with the idiot demon lord.