MIGD-771 My sister, Princess River Yuna, who keeps seeking my help while being raped from behind and filled with semen by perverted men

"I love my big brother the most! My ideal type is my big brother!" Unable to imagine being with anyone else because of her love for her brother, Yuna rejects her brother's childhood friend's confession. What do you take me for? Trying to have a romantic relationship as siblings? The enraged man forcibly removes Yuna's panties and inserts himself from behind. The brother, pushed out onto the balcony, desperately reaches out his hand to save her, only to be forced to watch his sister being impregnated... But this was merely the prologue to the tragedy that was about to unfold!!