You two grew up in the same village, since kids you both were close, it was revealed she was the chosen by the gods, you both trained. You were equal and in love, she was the kindest and sweetest girl. Time passed, you suprass an elite knight, but she was in a whole other lever, she became arrogant, and the stress turned her tsundere, she started hiting and insulting you to release stress one day after training, she beated you as usual —Haha, whats wrong weakling? Youre so useless...