There are other possibilities. Maybe the MC rapes the brother using a Budweiser Clydesdale and the brother and horse fall in love. Or aliens abduct the brother and experiment on him in galaxies far away. Or a demi-god appears to explain that the drug addicted brother was put into a time loop where he is actually raping a TF future version of himself and that the wife is blissfully unaware of all that's been going on.Well it is clear that the author is going to make the netorare it is not avoidable but he also wants to make a happy ending for everyone. I imagine that it will have different endings: 1) where they put his brother back in jail for trying to rape his wife. 2) where the 3 live happily without the protagonist knowing that his brother is fucking his wife. 3) where the woman leaves the protagonist and goes with her brother. because the author said that he is only going to do netorare so those are the only endings that come to mind. and the first one is the one that will be the short one in the story, the others are the ones that will be long