The scene where they meet again, it looks like she is wearing a wedding dress and holding ...

It might be a sign. (//∇//)

I hope no. Green boy all the way

I’m actually excited for that. I’m not huge on incest but they are technically not related by blood. Plus I read some other mangas where they were related by blood and had kids (story background of a characters parents) and it was kinda gross. The only thing that actually disturbs me is that she looks exactly like their sister that died. She’s older now but that still kinda creeps me out.