Okay, I also think that locking one Character out of a route for having chosen one choice or the other is not something I'd enjoy or that it makes sense for this game. I mean think about it. It's a game, and you're here to enjoy the game. Either you don't get us attached to a character at all by not having that character as a choice, that way we won't feel anything if that character if left out. Or if you're doing it anyway, commit to go through it completely. It's really saddening to see a character with feelings left out! Locking out Sayuri or Asami for for a choice doesn't make sense considering we have all the other characters which are fine with that scenario but not Sayuri.
That's like saying that Sayuri is ok with having a relationship with a person who is also involved in a relationship with others, especially like Noriko & Yasuka, but cannot come to the terms with the fact that her daughter also likes MC. So she either wants to lie to herself about her feelings by restricting herself, or she wants MC to set boundaries with her daughter. Honestly, how does that make sense for this game considering all the things that have happened so far in this game?
If story is well done and shows the struggles of them both coming together, no one would even think about it and would rather really enjoy it. But having such choice just leaves a sour taste in my opinion.
You are just left with a thought "what if I had chosen that?" You go to your last save, you choose a different choice, that's all well and good, but that sour feeling never goes away!
I hope, in future, a route involving both of them is included. Asami & Sayuri!