https://www.dlsite.com/books/work/=/product_id/BJ224043.html
https://www.dlsite.com/books/work/=/product_id/BJ307742.html (English)
As always, please support the artist and buy his works.

[I'm too horny to investigate ...! "Infiltrate! Rumored pleasure massage shop]

“Even though I’m just here to investigate this shop’s condition… If you keep rubbing me there, I’m gonna cum…!” At her coworker’s order to look into a...slightly fishy salon, investigative journalist Yukari Akizuki goes undercover to review a women’s-only esthetician’s shop.
While surprised that the practitioner is a man, there isn’t anything else suspect about the massage or the rest of the staff working there. Just as she begins to lower her guard, and even start to doubt her coworker’s suspicions, the esthetician’s hands start getting a little more handsy…?!
“This spot is pretty stiff too. We need to massage you here thoroughly.” Having all her most sensitive places played with, to even being stroked inside, her head goes totally blank!
—I’m going to expose this shop’s secret…! But having all my sensitive spots continuously toyed with like this, I can’t, I’m gonna…!

Japanese RAW (Chapters 01-04): /g/2565076/3d6e1767b8/
Chiese (Chapters 01-04): /g/1762902/659121b357/
English Webtoon version: https://comiko.net/series/90438

Ruined by the cancerous and brainless censoring...

Base +6, Bosanovarch +6