Yasha Ou no Saiai

Mei was born into a family tasked with exterminating malevolent supernatural beings, yet she grew up entirely neglected due to her inability to slay demons. Her life changes drastically when her arrogant younger brother violates a sacred taboo and awakens Ryouga, the king of another world. Left behind and suddenly thrust into peril, Mei discovers that Ryouga is far from a monster—he is a gentle, intelligent, and strikingly handsome young man. Recognizing the true worth of her rare and hidden healing power, he teaches her to value herself and invites her to become his princess. In Ryouga’s realm, Mei finally finds a place where her abilities are not only useful but deeply respected. Surrounded by acceptance for the first time, she begins to fall for the king who gave her a true sense of belonging. However, their newfound peace is threatened by events unfolding in the real world. Rather than taking responsibility for the broken taboo, Mei’s family shifts all blame onto Ryouga and devises an unthinkable plan: they are preparing to launch a full-scale invasion of his other world.