The Legend of Rebirth

He killed his two best brothers because of cowardice, and later gave up the love of his life because of cowardice. In the end, he had no choice but to end his life of resentment. But he was unexpectedly reborn and returned to his starting point. How would he choose to face his past? The previous life was wasted, but this life is proud, the power of killing is in hand, and massacre is the way...