FFF-Class TrasheroFFF급 관심용사; Ублюдок FFF-ранга; 人格FFF級のため魔王討伐やり直しになりました; FFF-Class Trash Hero; FFF級 渣英雄; 由於人格FFF級，重新開始了討伐魔王; FFF级勇士求关注; Jinkaku FFF-kyū no Tame Maō Tōbatsu Yarinaoshi ni Narimashita; ผู้กล้าขยะ คลาส FFF; FFF급관심용사

Protagonist Kin Han Soo killed the demon king after 10 years of being summoned in the fantasy world. Now it's time to be sent back to earth. What's this? The fantasy worlds god appears along with his report card. Because he removed all the obstacles that prevented him killing the demon king, his personality score came out as F. The regression that follows is that he has to return to the start and begin again. Can Kang Han Soo end this endless returns?