Ku received an invitation to a party hosted by a person who lives 100 floors underground. One Hundred floors underground?, he wonders. Ok, I will go! In Japanese. Distributed by Tsai Fong Books, Inc.Ku received an invitation to a party hosted by a person who lives 100 floors underground. One Hundred floors underground?, he wonders. Ok, I will go! In Japanese. Distributed by Tsai Fong Books, Inc.