Naruto: Hatake's Demon Son.

A young boy harboring a dying desire for transmigration yearned to embody Kokushibo. Miraculously, his wish for transmigration was granted, yet his new destination was the Naruto universe, diverging from the Demon Slayer realm. By a twist of fate or perhaps through a series of ill-starred circumstances, he found himself under the wing of Hatake Sakumo through adoption. Thus unfolds the tale of the transformation of one of the mightiest demons from the 'Demon Slayer' series, now intertwined with the Ninja world. Witness the extraordinary synergy as his potent abilities are amplified by the infusion of Chakra, revealing the newfound heights of power he achieves in this Naruto world. ---- (A/N: I will try to utilize the full potential of the demons and their abilities.)