Haha, fair. Cheers for the heads up.
Now you made me even happier so I'll get you more links. Other explanation is my memory is working slowly and I just remembered I have been patrolling that area couple of decades.
The problem in Kamata has never been to get a HE. Basically you just have to walk around and if none of the signboards look good enough for you sooner rather than later a girl will approach and ask if your muscles need some release.
The problem has always been there is normally very little massage and way more HE. And sometimes you get an accidental FS instead. Yeah, I know, really hard problems.
My go-to place for couple of years for a HE massage in Kamata was
http://sea-love-hsl.info/ The staff page shows you ten girls but there is only six. I have met all of them, some multiple times. You will get a decent, if not great, massage from everyone and then a HE that depends more of the girl but everyone got the job done. Haven't been in over a year though so my intel is not up to date.
A more recent find for a good massage is
https://hidamari.eey.jp/ When the Chinese lady opened the door for me the first time she answered my "Are you open now?" with "We just have massage". So that's what I got. Have been there multiple times since, in my opinion the best hard massage in that side of the city. I don't know if you can negotiate more services, I have been happy with just the massage part here.
I have probably been in at least around 30 places in Kamata but the weirdest ever is still a visit a few years ago to a "Thai massage" in the next building to Love Hotel Rochelle (recommended)
https://rochelle.hard-love.me/
I climbed to the fourth floor just before the midnight to enquire if they were still open. The door was opened by the shortest girl I have ever seen doing massages, she was probably just 140 cm or so on. So said no problems and I went inside. And stopped on my tracks. The whole apartment was covered in aluminium foil. And I mean everything. The walls, the windows, even the toilet inside was just covered with it. Some walls had stuff that looked like Indian style curtains hanging over them but even under that you could see the foil.
I paid for an hour of massage, got my clothes off and hoped someone would recover my body later so they could do a proper burial. It was also the first time I was happy there was no mention of a HE during the massage.