Akuma wa Fancy Allergy

When Aoi was little, he was always the prettiest. Even now, he's got the same beautiful face - but with every cutesy decoration his parents sneak around the house and into his things, the more he can feel his "perfect guy" image washing away...! Why is his dad so insistent on him always having cute things on hand? Could this have something to do with the demon from Aoi's childhood?