I've been debating on this plot twist, to either have it or not. I hate status quo love stories, and I want more of a unorthodox approach. It's based on Sci-fi, having characters wake up in the future scenario. The MC, has a older brother who ends up being the antagonist later on. Both brother's fall for two other girls who happens to be sisters. The MC older Brother marries/divorces one later on before their frozen. Well straight to the point, after the MC wakes up, he ends up on a adventure with this one girl who she reminds of a girl he had a crush on in his past life that no longer exist. Well obviously they both fall in love later, and almost same age as him. The twist is, that the girl he falls in love with so happens to be his older brother's daughter.... :/ Question is how far should I take it, kissing, sexually, or not even do it? I don't want the readers see it coming, as for the plot is like the skeleton. How will this make me viewed as the writer? I know this will have a huge impact on both characters. I don't know seems like it's generally accepted like example game of thrones, both sister/brother are madly in love. Just want a opion on it or just leave it out keep it as normal.