Once there lived a 15 years boy named Kuro, where he formed a contract with one of the strongest lifeform, the witch. Through this journey of him and her, will he regret the contract he made, or live with determination? Or will he get a friend? Or maybe... nothingness? This story will uncover anything behind the emotions nor anything he has on the past. Behind this cover, the ink will always come out from the world of fantasy Let the journey begin!