The Traitorous Building 5

Rock challenges Samon Gokuu to test his strength and is defeated with little effort. The Warden leaves to attend a meeting at the Police Department HQ. Mao Nimaijita accuses Samon about potentially following in his older brother's footsteps. Yamato and Rock return to Building 13 after spending time at Building 5, and while not themselves, they attack Hajime and Jyugo.