See the problem is how story attached Yona is, I could see her taking until you get to the end since I feel she'll need all her friends before she'll think romantically. Nami is the big wrench in that gear.
Yes that is what I was worried about. The last version I played was .27 and in it when she was introducing Man to Takumi at the bridge in the chaos lands she was like oh he just been my companion the entire time (





friend zoned). I haven't played the Nami storyline yet, but from the comments I saw in the thread when it first came out. I was like damn it so Nami is probably going to be Yona's main love interest assuming that Yona doesn't get raped or have sex with anything else before. And then I saw options for Man to corrupt / rape Nami which I imagine will cause problems between Yona and Man later on in the story.
So everything narratively in the story just seems like Man and Yona weren't going to have any romantic relationship, and seems pretty late to change.
I just went and read the comments (via Google Translate) on Cien, oh no it doesn't seem like we're going to get early romance between the two.
My guess the story will probably will just be;
Yona: "oh thanks for saving all my friends, I guess we'll be leaving now".
Man will be like: "nope you're mine now after all that work".
Then Man gets revealed to as the final end game boss with the outcome based on previous decisions. Where she willing joins after she and her friends get beaten, Man enslaves them all, or either Man or Yona dies.