The opening chapters introduced this woman who moved to the countryside (perhaps an island -- but specifically seaside) to work as a teacher there. Likely slice of life. I also seem to recall it had a child character similar to Yotsuba (Yotsubato). It felt similar to Hayachine and Barakamon, maybe Amanchu.

I read it around 10 years ago now. It only had a few chapters scanlated at the time, but I'm unaware if it's had any progress since then.

This? https://www.mangaupdates.com/series/fzx381x/kotokoto-ko-to-kotou