Lilya Asthon is a village girl living on the frontier of the Valdyrion Empire-until a sudden, violent headache floods her mind with foreign memories and knocks her unconscious. When she awakens, Lilya realizes a disturbing truth: she is still herself, yet she now carries the memories of a nearly forty-year-old NEET who lived alone, died in an absurd accident, and spent his life immersed in games. His final obsession was Eternal Realm Online, a popular VRMMORPG where players forged bonds, formed parties, and challenged the Demon King. In that game, he created a female Sword Saint named Lilya Asthon-cute, powerful, and built with "idol-type" specs. Now, for reasons unknown, he has been reborn as that very character. Armed with Sword Saint strength, deep knowledge of the game world, and the mindset of a former NEET, Lilya begins a new life filled with chaotic adventures, comedic misunderstandings, and growing bonds with girls inexplicably drawn to her. Lilya otherworldly story begin.