After a peculiar incident involving lightning results in the demise of 15-year-old Mochizuki Touya, he awakens to a face-to-face encounter with God. Expressing regret for a mistake, God offers to reincarnate Touya into a fantasy world, allowing him to bring along his smartphone. Thus commences Touya's escapades in a peculiar pseudo-medieval realm filled with friends, laughter, tears, and unexpected twists. Embarking on a whimsical journey, Touya wanders from place to place, pursuing whatever piques his interest. The stage is set for an extraordinary saga blending swords, magic, and modern technology in an enchanting narrative of adventure and discovery.