i dont remember the title but i think it was an amnesic guy who lived with an old ahh demon and the demon was the master of their really big house and one day idk why but he decides he wants to fuck the guy, and im like"wtf man" and then he decides to train him with a dildo while he's tied up but not in a bdsm way like there's no security or safe word- you just shove the thing in your ass boy or the old ahh demon is gonna explode you and then you discover the old ahh demon wanted to fuck him so bad that he assaulted him is bc they were lovers before the boy loses his memories and the boy just run away and he meets the captain of a medieval ship (yes like with the big hat and blade and stupid clothes and everything) who ALSO wants to fuck him and the boy choses to stay with him bc he dont want the old ahh demon to find him so he become a member of the crew and he fucks with literally everybody on this fcking stupid ship and the pirates have to fight with stupid monsters in the city in middle of the buildings bc apparently it's the duty of the pirates to protect the citizens so he ends up being caught with the captain of the ship by a hentai flower who sucks them with tentacles (im sure yk what i mean) but he's saved by the old ahh demon who find him in the plant just before he is impregnated (yes by the tentacle flower) and i dunno after i probably didnt waste my time any further with this but the whole time i was like "wtf is going on" and why is everything just so stupid and without any sense and why is he fucked and assaulted by the entire universe and i was like twelve yo when i read this shyt still remeber it today
this is such a hard question holy fuck
probably between hollow portrait by nishin masumi cz its like the definition of "whole house mad" and the novel A Smile from the Villain bc it was like bearable, and then the ending happened. I don't even know what possibly possessed the author to end the story like that

what's the most ''what the actual fuck going on'' yaoi u ever read