Searching for a manga...

So, I'm reading a manga via a Pintrest link and Pinterest shuts down. Manga gone; no record. So does anyone recognize this?

A young girl is visiting her mother's grave and runs into a pretty boy. They make friends and he says that he's only half a person because he doesn't have a name, so she names him Yu after the sun. When they part, she wishes they could be together forever and he gives her a bracelet, telling her she can call him anytime and they promise to reunite. Turns out the boy is a demon and she's made a contract.

Fast forward 10 years. She has never called him and he's tired of waiting so he goes to collect. Until she remembers him and can call him by name he is stuck in a wolfing form, but he has every intention of eating her so they can be together forever - HIS interpretation of the contract, but first she needs to fall in love with him so so she'll taste better, and of course she refuses. Thus begins the romantic battle. Anyone recognize this?