WMG / The Final Sword

Haleena is actually an Eldritch Abomination who gifted Rebora with reality warping powers so she can takeover the world

This is why Rebora is a overpowered Mary Sue because she was given reality warping powers and altered everyone’s memories to make them think she was The Chosen One. In reality, Rebora was actually a normal human who happen to be a NEET and Loony Fan of Touken Ranbu and dream of living in the universe where she is loved by everyone.