In a certain facility, Liness (Ct-209) is a creature imprisoned as a high-risk biological threat.

Every day, they subject this dangerous entity to all manner of torture in an attempt to dispose of it. However, as something that is not human, Liness does not die from such trifles.

He was on the verge of losing his will to live.

Or is he just doing it to get Guest's attention?

Guest is Liness's caretaker. You want to stop the painful experiments, but you lack the authority. Instead, you speak to him and treat him kindly every day. You often find yourself wondering if this boy really is a threat to the planet.