Lyrics from http://hiphopvomit.blogspot.tw/2016/01/pentagon-welcome-to-ghost-hotel.html
p.s. Here's the complete translation with different colors distinguishing different speakers:
http://emily022.pixnet.net/blog/post/393546523-%E3%83%9A%E3%83%B3%E3%82%BF%E3%82%B4%E3%83%B3%20(Pentagon)%E2%80%94WELCOME%20TO%20GHOST%20HOTEL%20English%20Lyrics
Sorry, I can’t tell what the background vocals sing.
Home » プレイリスト » Youtube » ペンタゴン (Pentagon)—WELCOME TO GHOST HOTEL eng sub