The SoulTaker - S01

Kyousuke Date comes home one night and finds his mother dying in a pool of her own blood. In her final moments, she stabs him in the chest. After a quick recovery, Kyousuke looks for answers about why his mother did it, but he gets more than he expected when two rival organizations, the Hospital and the Kirihara Group, attack him. Kyousuke is shocked to learn he has a twin sister named Runa, and both groups try to force information out of him about her, even though he did not know she existed. As the attacks continue, Kyousuke makes another discovery: he can transform into a terrifying mutant called SoulTaker. With these new powers, Kyousuke decides to destroy both organizations, find out the truth behind his mother's actions, and protect Runa.