My Infinite System.

Lucian Black awakened to be the most powerful hunter in the world, but he even with all these powers, he could not protect that which he holds dear, and had to watch her die.

Devoid of any feeling, he decided to focus his hatred on the monsters that caused all his suffering, and he became a killing machine until one day, he was betrayed and poisoned by those he works with but fate had another plan in store for him as he returned back to the day of his awakening, the day he awoke the most broken ability in the world.

With this second chance, he vows to protect his sister and find out what really happened to his parents.