"Where is he?"Lucuis entered into Mammon's room to find him having the best time of his life, in the bloodbath he was sitting in, then the compelled human girls that were with him in the tub, while he smoked weed.
To that Lucuis' could come to only one conclusion, the best feeling ever but it seems like he had forgotten that the war isn't over yet, and he's relaxing. Including the stupid Seth, who thinks that not telling anyone where he was was the best idea right now, considering the situation around him.
Although it has always been a habit with him, popping up when he's not needed and disappearing when he's needed. Lucuis couldn't really see the reason their father fancies him that much, but then for the fact that amongst them all that he's the one who didn't think of the risk, saving him made him immune to their father's harsh treatment towards them, especially him.