Chapter 1.4
That night before the training and the war starts, Lucifer and Mephisto are on a jail at the same room, Mephisto are fallen asleep while Lucifer just doing his biological needs by summoning one of her women from the jinn’s realm. Mephisto closed his eyes while making all the muscles in his face tense, before long black smoke appears that coalesces in front of him and summoning a screen. There is the clink of swords and also shots of electricity and other strange lights that made Mephisto's body seem to be pushed rumbling through a room.
“Ohh? Isn’t it Zein and his dogs?”