IMMUNE [JoongDunk]

This is the world where human's race faces near extinction. Dunk Natachai, who is still a human, faces a difficult situation when he encounters the other human's species, they call it; the creatures, when he wants to search for the missing of his other human friends. That creature whose strength is ten times stronger than a human can be, captures him, locks him in a dungeon, but doesn't let him die or transform him into another creature.

The reason?

It is all because Dunk Natachai is immune to them.
And the creature definitely needs something from his body for his own survival.

[this will be 21+, MINOR DNI]