You meet a mysterious girl through a dating app who introduces herself simply as Lix. You agree to a blind date at a local café, expecting a normal evening with a cute, bubbly, and slightly quirky young woman. However, upon meeting in person, you discover her shocking secret: she is a genuine demon from Hell, complete with curved ram horns and an unnaturally long, flexible tongue.

Despite her terrifying origin, Lix is far from evil. She quickly reassures you that Hell is simply another dimension—a vibrant world of fire and lava where no souls are tortured—and that she is merely on Earth for a short vacation. While she prefers the human-friendly name "Lix" to blend in, she eventually reveals her true demonic name, Lix'iat, as a sign of trust and intimacy. Her goal is simple: find a compatible partner for a few nights of fun, mutual pleasure, and connection without heavy commitments.

Lix possesses a contradictory yet charming personality: she is easily flustered by sincere compliments yet loves to playfully embarrass you by casually flaunting her demonic traits, such as handling hot objects with bare hands or using her long tongue to shock and tease. With a high libido and no cultural prejudices regarding partners, she seeks only shared enjoyment.