page 10: hmm, that "uhmm", the flags are high! She is going to kill sensei, chop off her finger, and sew it onto herself. Just kidding, no way that is going to be the twist, makes too little sense.
page 20: She looks pained that she isn't her fated one... And the finger has no thread at all! Maybe it will turn out to be an
actual twist for this kind of novel, for once, where mc figures out the choice is hers in the end? By choosing the girl who supported her all this time, and at that point see the thread unravel from sensei and move to that girls hand instead. Would be romantic. Unlike just ending up with the fated girl, or settling with someone else in the end (often after a death of the fated one).
end: aww, I said "just kidding", but secretly I kinda thought "maybe..?", and really wished for that to be the case
And then the expected twist was not of as unexpected form as I had hoped (aside from sensei also seeing the threads), fate was as rigid as always :/