note This not a rape. Keyword is "both sides" not just one who doesn't want to, in case you questioning. What I referred are doujin that characters forced to having sex with eachother either in situations; to exit the trap room, force filming porn, humiliated by bullier, done or death, mandate ritual, lost control their body(by physical or under influence from drug or magic), etc. Stranger to each one or have some kind of non romantic relationship. Sorry if my wording may not beautifully nor compact.