Im stuck on the quest: "Try to Develop your Personalities with the other guests" What to do?
Just reach the rank: Friend with Benefits with the guest characters, which is done by having sex with them after reaching 5 relationship points with them. Then being sure to be in the Eeveeloution form that matches theirs (Gender doesn't matter as long as you're not genderless). Then, there should be a special scene you can view when talking with them just under their character portrait.