why not? look at the tech on the side of the toilet (wonder what those button do)! we don't have that in the States!
Err.. probably because to prove that the bodily fluid from Agatsuma went out of him thus removing the ability to lie..
It's one of those toilets that spray your but with water
he was cleaning agatsuma's cum out of his asshole.
UH..Why did the autor have to draw that ? O.o http://www.mangago.me/read-manga/count/tr/134244/page/118/