Well clearly you're not studying or exerting law yourself because it IS about following written rules WITHOUT being subjective or being biased because of your morals/opinion...
(also, jurys are the ones who let proven murderes/rapists go free and innocent men go to prison, or even the death row, because of bias, just watch Twelve Angry men, you'll see)
No matter how bitchy and deeply malevolent the brother is he is a kid and according to the law children are not responsible of their actions (lack of experience, maturity and/or mental capacity to fully distinguish what is right and what is wrong). And the law is, in essence, ment to protect the weak (e.g., kids). So yeah, it is wrong to let the brother get raped...
Nobody "deserves" to be raped. That's not justice. Everyone is to blame in this situation (except maybe the parents, we don't know if their youngest son isn't simply naturally deranged)
But this is yaoi land where pre-teens /very young teens act and are treated like adults because shotacon is a thing... So I guess law doesn't apply ╮(￣▽￣)╭
Woah wtf I thought this was a yoai not not fucking law and order
wow I hate the younger brother (the raws)
To all the ones who blame the older brother for not stopping his relationships with his ex boyfriends: I hope you are not studying law or that you don't don't work in that field. Law most of the time doesn't equal being right, that's why it's people being judges and jury and not just somebody who follows what's written...
You actually BLAME the older brother because he didn't stop a illegal rape (underage) instead of seeing that the problems is the little brother being a bitch and INTENTIONALLY having sex with them?? If there is someone to balmer it's should actually be the ex boyfriends for being bastards and the parents for having grown up a little brother with such a twisted personality.
....