I'm really like this Nami SOS series. There is already a collection of 10 chapter Keiko no Iru Machi S here:
http://ehentaihip.com/g/1814324/68757ff21b/
However the quality of chapter 9 is kinda bad and chapter 10 is worse.
Those chapters are from COMIC Penguin Club Sanzokuban 2017-02 and 2017-07. The high quality of them never uploaded anywhere.
So I looked for websites to find them and only found cmoa have high quality version, however it they cost 380 points (yen) to buy (about $2,5), can someone purchase them and upload those chapter?
If you want to save money, cmoa have sign-in system that reward you 1 point per day. The point will expired after 6 months, so you can collect at max 180 points after 6 months, and only need pay 200 points.
[www.cmoa.jp] https://www.cmoa.jp/title/67999/vol/63/
[www.cmoa.jp] https://www.cmoa.jp/title/67999/vol/66/
If anyone willing to do it, just notice the online book store like this always prevent you download picture from their site, so to get the high quality picture, you must get it from the cache. If you're using chrome, open the book online, open the developer tools, click on the networks tab, and everytime you turn a page, you can see the catched picture, just download them. However the pictures is cutted and shuffling, you must edit the picture with photophop. If you don't have time to do that, just upload the chapter here and I'll do the edit work.