One-armed Assassin

A young man named Crowa plans to avenge his father who was killed and his mother, who was kidnapped by a group of notorious assassins called Vindinor clan. These individuals wield unique weapons and power. He lost his right arm on the day of that tragic event. He was on the verge of dying but then, an old man named Zeek suddenly appeared and saved Crowa's life. 2 years have passed and Crowa is now fully trained under Zeek. The old man's brother, Shaki, made a prosthetic arm for him that absorbs the powers and weapons of the assassins he kills. Together, with Zeek's help, they hunt the people who killed his father. The tale of the one-armed assassin begins.