Looking for a story that has an older big brother be the one to go after his younger little innocent sister

[SS100]

Usually such stories tend to make the sister be very receptive, if not the one who actually starts the relationship. I get why they do it because it's making it 'less bad' to the reader in question. But I want to just get a story where an older big brother is the one going after his little younger sister. And her to be innocent or more innocent sexually than him. Like this big brother who can dominate her physically, sexually and life experience wise taking their younger innocent barely legal sister.