Look I think we all know which ship is going to be end game. But what I really want to know is how that would even be possible. In terms of the law and just social ramifications because even if they aren't blood related. They have carried out a sibling relationship to the outside world (and to each other I guess idk it doesn't seem like Eugene actually loved her like a sister maybe tried to see her as one but like can't change what you feel I guess) so I assume the people around them would be opposed and weirded out when they're like hey we're in love, hey we're going to get married.
Idk am I overthinking it, probably but I'm just really curious about how they're going to justify(?) their end game relationship.
Also just my personal unsolicited opinion but like I stated above I think we all know which is going to be end game ship. If you truly feel uncomfortable with the ship, which you have every right to be, drop the story instead hate reading something for the sake of idk riling yourself up. Or IDK needing to remind others how you're morally superior. I for one understand how fiction and the real world work and would be weirded out and sketched out if I saw adopted or step siblings get married in real life. But because this is fiction it doesn't bother me and I can enjoy it. That being said you are allowed to feel what feel and state your own opinion and not feel comfortable with the end game ship. Just don't come after people who enjoy the story.
And I just want to clarifying I'm not trying to say that if you don't like the ship you can't tell the difference between reality and fiction. I'm just trying to say that I personally don't mix what I like in my fiction to what is acceptable in real life or not creepy or whatever. So I don't know how about we just don't jump to conclusions on people.