Reborn to Stay by Your Side Forever

When they were children, he made the other fall from a tree, so the other tormented him ever since. Only in the end did he realize he loved him, but by then it was too late. After taking revenge for everything, he willingly died at the other's hands. He never expected that after dying, he would be reborn. In this life, things between them haven't even begun yet. Is there still a chance to make things right?