I forgot the name of this manga/anime. All I remember about it is it is a supernatural fighting manga where each character has an item for example and article of clothing that allows them to fight in those supernatural fights. The main character I think had a bracelet or earring that allowed him to fight giving him some supernatural ability. One of the main female leads had a 1 piece swimsuit that made her indestructible but once she wore it she can never remove it . It is also set in a modern time.

im most likely going to be wrong but might as well give it a try....Kill La Kill?

Sounds a bit like C³ once the plot gets going.