>>687032971) Very naive girls love effinimate guys thinking they'll be more gentle and relatable, it's what kpop is so popular. This is usually the main reasons, even girls who grew out of that phase still have some level of primal attraction to this type.
2) Some girls are bisexual and the ideal of an effeminate flat-chested male to them is appealing in the same way that a chick with blown up tits and a a dick is appealing to some coomers.
3) Some girls love the idea of an easily-manipulatable femboy to dom. This one is rare but it definitely exists.
4) There are a few women who are so degenerate and into yaoi the idea of being dominated by a bratty trap turns them on. This is extremely rare.