advancedd

Monster is one of the sub-busnesses of Material Group (www.mate-real.com). Check out the other businesses, each of which is highly specialised.
Monster is for those who go gaga over big appendages, never mind what body or face they are attached too.
Non-Binary offers fem boy escorts exactly as the name implies.
GMPD offers heavy bodies - not in any muscular way.
Freestyle offers escorts who are prepared to travel to meet clients (at least that's how I am interpreting the information on the page).
Men's Healing Place is for massage with only "close contact" or "hand massage", i.e. no hard sex.
Boyish: I found this one a bit confusing. At first I thought it meant a slate of barely legal boys, but it seems to have mostly girls with short hair, plus a fair number of FTMs. (Wasn't there a discussion recently where a member said his 2026 resolution was to conquer FTMs, his last frontier? Bro -- hot foot it to Japan!)
The real disappointment is the sub-business Dumbbell, supposedly specialising in muscular and athletic men, but scrolling through the pictures, they are mostly lean athletic, very few body builder types.
Trust the Japanese to create such specific specialisations for different market niches. However, the same boy can be offered through different stores. For example, Daisuke belongs to Monster but is also advertised by Dumbbell.
It's self-description at the bottom of the main page is refreshingly blunt: "The Materials Group One of the largest in Tokyo It is a group of prostitution stores." How many similar businesses in any other country would call itself a "prostitution store"!