There should be a link to the official raws on the homepage for this series but it's currently only up to chapter 20 (and requires payment) so rawkuma has all the avaliable raws and they are usually up to date
I'm not sure how well this site would work, it has up to chapter 20 in the raws but just watch as it has annoying ads and I don't know how well lifting chapters from the site would be.
https://rawkuma.com/manga/noa-senpai-wa-tomodachi/
It's the raws site I usually go to to check if there are...
I like the story but is it too mucb to ask for just some info on her being from the future? Like MC doesn't need to know but can we the reader get at least a crumb of info?