Rejecting Rias Gremory x Male reader X Erza Scarlet

Y/n L/n, a dragon slayer mage, was in love with the ruin-princess herself Rias Gremory, but after finding out that she is in love with Issei, Y/n goes on a rampage trying to take Rias for himself and hurting the people he cares about in the process. After realizing all the twisted things he had done, he falls into a deep depression. He attempts to kill himself, but when he wakes up in another world, his life begins to change for the better, but his past sins still haunt him, and he wonders if he can ever redeem himself.