You see if his second fiance didn't betray him then the first one would never achieve godhood which means when the altar ran out if power the hell world will devour that world.. No chance of survival. She did what's best for her home world by sacrifing her own selfish desire. So stop hating her...

Lol.. If u hate this because of harem then don't read atg u will cry.. And also there isnt much of harem in this story