Thanks for agreeing but I'm honestly confused now lol, and the thing is we'll never know the true ending. So frustrating!!! ughhh... I wish I knew how to write Japanese so I can send a message to author sensei and beg for another chapter. I feel like even if I keep re-reading and pick out all the details, it's still a 50/50 shot as to whether Nagano is innocent.
but these are the scenarios I can think of if the story were to continue:
1) Nagano is scum as well then Saki will continue being a sex slave to all 3 but he'll actually be 'happy' bc he won't feel ashamed of his lusty thoughts since Nagano is also tainted and joining in
2) Nagano is actually innocent, feels really bad for what happened to Saki and rescues him
3) Nagano is actually innocent but he turns into the 2nd sex slave
This story make me mad and sad. Saki did nothing wrong to fall in this trap. Really nagano ask to break his beloved one. To be honest seeing a empty body with no sole, who would become attracted. To be honest I am happy to not seeing nagano. Seeing regrectfull face or seeing his evil face bothering make me feel worse. But the two guys who train him. They did it just for money. They are even worse. Knowing saki feeling. God this story it just .....
After all I just can help to hate all the characters in the last story, and wish them the worse. And pray for a medical for saki to just be save angry get back his bright eyes.
I really wish this story had few more chapter to just show the happy ending for saki. And a good punishment for the other 3.
Also I Wright this but j am still mad.

Dude that last chapter... I feel like Nagano isn't as pure and innocent as Saki thinks... If we saw Nagano's face he would have a sadistic smile and would have joined in on the 'fun'. On page 145, you can see 3 sets of legs hovering over Saki - that 3rd person I'm assuming is Nagano. But has Nagano always been corrupt or did those 2 delinquents taint him over time? Maybe Nagano really is innocent. I wished there was another chapter to this story so we can find out what happens to Saki. ( ̄へ ̄)