These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
Complete Monster - Falcone takes explicitly evil piracy of the book's setting, preying on innocent merchant ships just trying to get from point A to point B, to another level. He slaughters everyone on the ships he boards before blowing the ships to pieces, the only survivors the children he captures to then sell as slaves. Some of them he keeps for himself and abuses in every way your mind can possibly think up. Even after his death, flashbacks show him reveling in his atrocities. This is in a series, where everyone is a little edgy.
Fridge Horror: You think Jos and Yuri have it bad, until Falcone lightly mentions his protégés are better treated than other kids sold as slaves. Later, Evan confirms it. If Yuri was beaten, raped and trained as a prostitute and a killer... just think about what Evan had to went through and we weren't told about.
Ho Yay: Many confirmed pairings. The ones that haven't been confirmed are Evan/Jos (canon one-sided), Evan/Ryan, Ryan/Sid, Dorr/Captain Azarcon, Niko/Jos (squicky but there).