The brother is a piece of shit. The sister is a piece of shit. This manga is a piece of shit.
Saw this on new updates and thank god there’s only 12 chapters, I am dropping this, forgetting it ever existed, and possibly even finding where I can pursue legal action against any and all who brought this incest/S&M/Down syndrome love story to life.
I pray Rinko murders both MC and his sis, that is literally the only way this manga can end decently.
Congratulations author! You have really wrote something terrible.