Think about it this way: just because it involves their butt doesn't mean they got raped. It's like if you put something in their mouth, it doesn't mean they got raped. Two had sexual organs put in them, the girls. The other two were a log and possibly a parasitic insect (which he threatened but didn't have on hand so he probably didn't do it)
Each of them got violated in the way they deserved it and where it hurts. First dude loved bullying and beating up Haruki and he died by the very same procedure. The girl who was inlove with her uncle also got her own medicine, she asked her friends to bully and even SA her friend who teased her. And in exchange, her vulnerability was taken advantage of as well and got slapped hard by her uncle lol. The third dude loveddd torturing Haruki, so he died by torture as well. As for the pig teacher, she raped boys, UNDERAGED BOYS!!! Heck, being raped by pigs is what she deserves for being a disgusting wh*re and touching kids. >:(((
Not true. You said rape isn't sexual, and yet the LEGAL definition of it is: The crime of rape, often referred to as sexual assault, occurs when someone engages in non-consensual sexual conduct against another person. Says nothing about putting anything in anyone's genitals, and anyways that definition that you tried to make up is far too general for it to be applied
The revenges are satisfying but tbh I don't like how the male characters get a normal death but both the female characters also got raped before they died. I get that their death is related to how they acted before but the first guy was perverted and only got bashed in the head