Yep, so there are only 7 chapters available (all of them scanlated, go look for the last scan group's tumblr page), the mangaka has since then deleted their X/Twitter and Pixiv account, which is a real shame （￣へ￣）WHY??!! This was so good, and I really wanted to know how it'll play out in the end ... damn you, cursed BL title lol T_T
have you check this out? there's a sequel to this manga:
It's titled: [sono ato no misutaa maameido] or [mister mermaid after that]
said it was published in a doujin mizushiro sensei create [sutoreinji no taiyou] or [strange sun]
here's the detail on page:
http://www.mangago.zone/read-manga/mister_mermaid/mf/v01/c004/42/
♡ Solo scanlator
♡ I now mainly pick up BL manga that were dropped by others (but not those already officially licensed in english).
♡ Please do not reupload my scans elsewhere without my permission, and more importantly don’t post them on social media.
♡ Don’t be afraid to message me even if you just want to say hi or chat about manga ପ(๑•ᴗ•๑)ଓ ♡
I also have a discord account if u want to contact me there:
Yun#5393