Jyuusai no Saikyou Madoushi (十歳の最強魔導師)
Web Novel: https://ncode.syosetu.com/n6583dj/
Currently at 8 LNs (I think It's ongoing, but not sure, 8 released very recently)
A story about a 10 year old girl who grew up working the mines as a slave, turning out to be extremely overpowered. The draw of this one is probably how humble she is. It can also be pretty dark at times. It's straight up fantasy. Sorry about the mess of information.
I really enjoy this one, Ferris (the MC) is extremely adorable, and all the characters are great in their own ways. I'm sure that's something that's always said when someone recommends an LN though. I think the only thing keeping this from being straight up yuri (as far as I've been, which I'm on LN 5 currently) is Ferris is a bit too young and sheltered (because of growing up as a slave) to get what romantic feelings are. It has some great comedy, lots of adorable moments, and moments that really pull at your emotions. The Fight scenes are generally pretty barebones is one aspect that might turn off some though.
It would make me very happy if more people could enjoy this, as the world at large would benefit from getting to know the adorable and humble OP protagonist and her band of friends(harem)
@LurkingMcLurk Thank you for the info. This is my first time making a suggestion, so I didn't think to look for this stuff.
I'd like to get this one (the Yuri LN bot on Twitter tweeted about it quite a bit).