Guys! I came back after years suddenly remembering this story and now I apparently found the (free) raws of the rest of the chapters: https://syosetu.is/manga/%e4%b8%89%e6%97%a5%e6%9c%88%e3%81%be%e3%81%8a%e3%81%af%e2%99%82%e2%99%80%e3%82%92%e3%81%88%e3%82%89%e3%81%b9%e3%81%aa%e3%81%84-raw-free/ (it's completed with 26 chapters)The site is VERY slow and all but it's the only one I found
Guys! I came back after years suddenly remembering this story and now I apparently found the (free) raws of the rest of the chapters:
https://syosetu.is/manga/%e4%b8%89%e6%97%a5%e6%9c%88%e3%81%be%e3%81%8a%e3%81%af%e2%99%82%e2%99%80%e3%82%92%e3%81%88%e3%82%89%e3%81%b9%e3%81%aa%e3%81%84-raw-free/ (it's completed with 26 chapters)
The site is VERY slow and all but it's the only one I found