Setsun orgasms too, the moment he feel's Jarek begin to dump his seed. The orgasm is brief, average at best, (most likely due to the two previous ones) but enough to bring Setsun to his knees all the same. There's no fight left in him as he's dragged back to his cell. Hell, they could have offered him up to half the cell block and there would be no fight left. Not to mention the drug was wearing off, his cock finally shrinking and his mind starting to clear.