After vanquishing the Demon Lord and feeling drained, a hero's world is turned upside down when he encounters a red-haired girl in distress, pursued by unknown foes. Struggling with amnesia, she captivates him instantly. Determined to aid her, he embarks on a quest alongside his eclectic companions: a cynical sage, a brilliant knight-princess, a centuries-old child, and an affluent necromancer. As they face relentless adversaries, his fascination with the enigmatic girl raises eyebrows among his former allies. Amidst unraveling the girl's enigma, a chilling revelation threatens the fate of the world based on her mysterious identity. With his loyal comrades, the hero confronts danger and love intertwined, delving into a past shrouded in secrets in this fantastical journey of rediscovery.