>Imoutos are cute, innocent and will do anything to impress their onii-chan.
Bullshit detected. Imoutos are demanding, bratty, and consume time and money needlessly.
>Onee-sans will forcefully grapple you and Potemkin Buster you through the bed.
This is correct, however, and the reason why Onee-sans are the best. They cut to the chase and do it with class.
I like that one 4koma where the redhead oneesan is a major bitch to her otouto, and she has a reverse trap friend and another one who is into BDSM.
However, the reverse trap is the best girl.
Who has to buy their own dick? Is that particular anon going to have to go out and be like. "Oh that was my dick. I remember that bad boy. I'm going to get that for my nee-san"