Main plot or important subplot involves secret powers, secret identity, body switching, secretly crossdressing, acts differently in different situations.
Mostly, I watch anime before reading the manga. These are the manga that were the other way around. (I still haven't watched some of their anime adaptations yet.)
This list has all my favorite shoujo manga that will be enjoyed by any cuteness lover. Give them a chance and you won't regret it.
Manga that's gonna be a pain to find but worth reading!
The Dreaming (OEL)
Princess Ai: Rumors from the Other Side
A list of my favorite manga, I consider many of them as some of the most unusual and outstanding manga I've ever read.