(Soulmate AU, where your heart will glow when you meet your soulmate.) Marinette met her soulmate once before, but couldn't remember his name, just green eyes, the nickname "Kitty", a shining green heart.

The Collège Françoise Dupont decides to throw a masked ball in celebration of Ladybug and Chat Noir saving the school and its students countless times. Marinette knew this would be a special event, but the surprises the preparation and actual ball brought were far beyond her wildest dreams. Especially when her long time crush and a certain alley cat get thrown into the mix...

One of Marinette's rare unlucky days turns into something treacherous. Thanks to a certain cat, the real danger passes but there are other things to be more afraid of. Her heart, for example, might be one of them. Mari/Chat.