层间声音简介
Anoiseiscomingfromthefloorupstairs.Eunsu,hearsthisforoveramonthwhichcausesuncontrollableangertoriseup.Shegetseliminatedagainfromacompetitionshehadpreparedforalongtime.Eunsudecidestowriteherlastpiecewiththethemeofthenoisebetweenthefloorsandpersuadesherfriendtohelpherfollowandtrackthesecret.