I've seen a few comments asking about whether there's forced sharing content or NTR in this game, so I'll just leave this here.
There is absolutely no Netorare content, but there IS Netori content. If you don't know the difference, the former is when the protagonist gets his girl stolen, while the latter is where the protagonist is the one doing the stealing. There is also no forced content where you share a girl with another guy
HOWEVER, you ARE forced by the game to share Christa with Ymir, unfortunately, from what I've seen the scenes are sadly unavoidable. Since a lot of Ymir's scenes depend on Christa and in Arc 1 Ymir is quite literally a part of Christa's relationship tree (Unfortunately) So if that bothers you, my only advice is to turn on "Skip unseen text" in the settings menu and hold CTRL until whatever bullshit involving Ymir is done with. Almost every other scene makes up for her existence tenfold, so just enjoy those later. The game is incredible and the dev probably spent an AGE on it, so just skip the stuff you don't like, play the rest, enjoy, and maybe rant about what you DIDN'T like somewhere, as long as you aren't mean abt it, While praying for an arc 1 rework and a way to avoid scenes like that, its all you can really do