Ahahahahaha even now I still believe that the narrator is the mountain spirit or whatever force is "creating these coincidences". It definitely has played a lot of role in the story so far. Maybe it really is responsible for Miae and Cheol meeting again and gradually what brought them together, and perhaps also for creating and pushing their current conflict as well which is making them feel distant from each other. But I dont think it is powerful enough to cause every bit of it either.
From what I hv seen, this force or spirit is only able to influence the situation and circumstances, how the ppl involved behave and use these influenced circumstances is not smth this entity can interfere with. Hence why we would often see the narrator be confused and amazed at both Miae and Cheol's actions, and often also the other characters, coz it cant predict or control what they do in the end - that's in their hands entirely.
A huge reason why many of us are wondering abt it's power is probably because of the way the narrator spoke in ep 159 cliffhanger and also Miae's internal monologue at the telephone booth in ep 159. Like I hv been saying, there's still only so much power this entity has because in the end everything is still in the ppl/characters' hands. Miae had wished for Cheol to liker her and believed that her wish had finally been fulfilled in 143 and that it was being take away after that - which I think ismt correct because while Miae was thinking that her wish had been fulfilled in 143, Cheol was hving his own different thoughts and we also saw his pov on his time with Miae. Even b4 all of that, there hv been several signs and moments which make me believe that Cheol already liked Miae when she had wished to the stone tower to make Cheol like her as well.
Also Sunjeong did say in the beginning of the story, that it takes 2 to tango - meaning Miae wouldn't hv gotten this far in their relationship by herself, since Cheol also had a hand in it.
So what I mean is, we need to hv faith in Miae and Cheol more instead of this mountain spirit entity or whatever, since they're also the reason why they are where they are rn, be it when they ended up confessing to each other or their conflict - both are equally responsible for their situation. The povs we get to see are very partial and biased, so we fail to miss out on these things. Even this narrator is very biased. Miae has to believe in herself, and Cheol has to take similar actions as well. The mountain spirit or narrator is also just a spectator at the end of the day and can only do so much to their relationship, and I mean it in both a negative and positive sense.
Plus ig I should add this, but I also believe that it is trying to push cheolmiae into realising what they need to work on with their current unpleasant situation coz it cant interfere later on when something bigger happens and it will really be completely upon Miae and Cheol themselves then.
(I hope that was messy enough ✌️)