Actually, that "weird person from the hospital" is the key to the "other world". I haven't read the novel so I don't know any future spoilers but I'm up to date with the webtoon and it's been somewhat explained how the other world came to be and I believe they even explained how MC ended up in that world. The one thing I'm not sure about is the science fiction aspect of it all, meaning why are there different worlds and the such

Right now I'm at chapter 160 so please no spoilers BUT
I was actively reading this up until a few years ago but felt frustrated since nothing was progressing in figuring out what's going on with DanI and the "other world". There was once a chapter where someone weird appeared in a hospital or she just suddenly disappeared on the stairs when she was walking with Woojin through the school. The fact she's actually from another world is what I'm talking about.
I really wanna know WHY she is in another universe and whether she can stay there. Has this been continued/ have we been given more/ some answers since Chapter 160?
Again, I don't want or need spoilers. I just want to know the story is progressing in the WHY of everything. I really love the slice of life aspect but I feel like it's pushing everything else aside which is unfortunate.