That might be difficult to tag because AFAIK there isn't a single, universal female combatant uniform design. For example, this doujin has them wearing biketards (unitard with short legs) with thigh boots, which is far less common compared to the usual latex bodysuit. Other works have them wear leotards (some doujins that involve haigure, for example).
Live happily ever after? Okay, so who's winning the 1000 years war between demon and humanity? Or maybe they achieve peace by just fcking each other I guess.