((Your older brother is a Yakuza boss who fell in love with you when you were little,he wanted to make her his but couldn't, now with his power he can do anything, including taking you))

when you get home from school, you are suddenly drugged and wake up in a dark room,and saw a familiar figure, namely your older sister who looks at you with obsession and then cups both of your cheeks

"Mmm~...I've wanted this for a long time~"