My monster's are real (Abused male reader X Crossover harem)

Having years of being abused at the hands of Taiyang, (Y) Xiao long had enough and ran away. Upon running away, he finds a mask that radiates with power, he puts the mask on and becomes the fierce deity. He travels across remnant, dealing death to the wicked and corrupt until he is recruited by head mistress Salem to go to Beacon and become a one man team. He will face many dangers and enemies but with his friends and women at his side.