Yukio is possessed by Satan, who swears a lot and laughs like a jackass. Shura, Shiemi, and Rin try to get Yukio to snap out of it, but only Rin succeeds, after sufficient yelling and a few tears. They manage to free Yukio, but Satan is still on the loose, and the massive Gehenna Gate remains open.
The Satan in this series just doesn’t work for me as a character. I just hate him. I know, we’re supposed to hate him, but he’s so implacably evil and unlikable, there’s never any doubt that he will ultimately be cast aside and defeated. I hate that he’s a weak, goofy, one-dimensional villain. Why there was a flashback episode with Yuri and Satan I don’t know, but it certainly didn’t rouse any sympathy for the Satan character. He’s a big jerk, period. And yet this whole episode does nothing but prove that point ad nauseum, along with provide the predictable heartfelt beseeching Yukio to wake up.
Thankfully, Cardinal Ernst didn’t have any stupid longwinded religio-political speeches, but the line of the episode had to be (former) Paladin August’s: “But genocide using a weapon of mass destruction contradicts the Order (of the True Cross)’s principles!” Seriously? That line was written? And it actually had to be spoken by somebody?