Tip Tap Night

* Please note that all locations, organizations, groups, events, etc., appearing in this story are fictional and may differ from reality. Kwon Su-an lives confined in a secluded mansion in Pyeongtaek, like an isolated island. Born to provide for his brother who suffers from a rare disease, he lives a life cut off from the world, giving blood only to his brother. Then, one day, unfamiliar footsteps begin to be heard in the mansion. The owner of the steady yet assertive footsteps is a recent visitor to his brother, and also a being that arouses curiosity in Kwon Su-an, who lives locked in his room. Days go by with the unidentified man visiting as 'his brother's guest,' Tap, tap. From s...