Fangirl-forever Stories

There is a new girl at school who seems like she's not telling everything and the things she says feel like they are fake. She also says she lives alone. She sassy and sweet. On the same day here comes a new superhero named Royal Mystery. Could she be the reason of finding the of identities of Ladybug and Chat Noir.... What's her real name...... Who's her parents.... Where does she live....