Written and illustrated by SIU.

288 pages; softcover.

Bam must journey skyward in a mysterious tower if he has any chance of reuniting with his best friend Rachel, even if that means facing his own death. Bam climbs higher up the tower making  both allies and enemies on his quest to find Rachel, but as new revelations about their friendship reveal a much deeper, darker secret, her intentions aren’t as clear. The hide-and-seek test has begun for Bam and the surviving Regulars . . . even though one of the administrators think this test is far too dangerous. Each team of challengers must face off against a Ranker, an incredibly powerful being who has already made it to the top of the Tower. If they can’t outfight him, they’ll have to outsmart him. Khun, leading the first team, has a few tricks up his sleeve. But Bam, separated from his usual allies for the first time, faces danger and risks betrayal at every turn. This volume collects episodes 40 to 50 of the hit WEBTOON comic.