Kasi leads a double life as a mundane salaryman by day and a high-level adventurer by night, journeying to a fantastical realm each time he sleeps. His seemingly uneventful existence takes a thrilling twist when his elven companion follows him back to Tokyo. While uncovering the secrets of a mysterious underground city, the duo befriends ancient dragons and unlock treasures, pushing Kasi to navigate the challenges of living between two worlds. Experience the magic and mystery firsthand—watch the video to dive into this enchanting saga!