Awakening in a mysterious forest far from home, Kousuke must navigate survival challenges, utilizing a unique video game interface to gather resources and construct tools. Yet, his respite is marred by nightly assaults from the hostile non-human inhabitants who harbor a deep-seated animosity towards humans. Amidst this perilous situation, Sylphy, a striking dark elf, emerges as his guardian, declaring Kousuke as her possession and pledging to shield him from harm.