Koiakuma♥MOMO

The effortlessly popular Koimomo is known as "Love Devil Momo." One day, she meets Kiki, a real devil! Kiki saves her life, but in exchange, she is forced to make a contract with him. Kiki tells her to make a boy fall in love with her and steal his heart. Koimomo is reluctant, but she is told that she will be set free if she can steal one of the rarest hearts, so she approaches Kanade, the owner of a rare heart. (Source: Shogakukan, translated) Note: Includes three extra chapters.