Soul for a Girlfriend?

"Make girls fall in love with you or accept your death." The female devil smiled through her crimson eyes and her white hairs shining under the moonlight. An introvert boy of 17 years old, who deemed love a questionable waste of emotions. And people who love each other as idiots and naïve for wasting their time and effort. Until that one unfortunate day, He involuntarily signed a contract with a devil from hell and his world turned upside down. And what the hell is this contract. (Pun unintended)