Himeno x Male Human Devil Reader

You happen to be raised in the wild woods. You didn't know your parents, nor don't even know what happen to them, not even having siblings nor family members, you had nothing...but you had a friend, a kind hearted grizzly bear cub, who you found out that bear cub happen to be a devil. Later on, you and your little bear cub friend got into deep trouble, as your friend then decided to give its heart, and in exchange, your bear cub friend wants you to keep on living your life...with that said, your bear cub friend gave its heart to you, and you gain its devil power, and can turn into a giant devil grizzly bear with incredible strength, speed and endurance. After that, some people have found you in the woods, and happen to be Devil Hunters, and one of them has found you interest in you and decided to take you with her and look after you...so what happens next? Find out!!!