The Man From The Semi-Basement is Imprisoned in My Room

Gaeseok leads an ordinary office lifebut that life is the result of his obsessive efforts to appear "normal."His nightly struggle to maintain that ordinary faade is shaken by the thumping noises that rise from the floor to sleep, growing extremely sensitive, he finally makes mistakes at Gaeseok, whose only goal is to perform the role of "being ordinary," those thuds are nothing short of a ticking time bomb threatening his very last, he goes down to the semi-basement below to complain about the as his protests grow heated, the one who opens the door is a strangely familiar, enigmatic Gaeseok's complaints, the man goes up to Gaeseok's apartment and ties his own ankle to the window framelocking himself inside Gaeseok's man who imprisons himself in Gaeseok's is his purpose? And what was the true source of the pounding noises from the semi-basement?+