I am a masseur in one of the spas that Mark visited. Not much to this story but I gave him a massage and he had a towel over his body. While I was massaging his thighs he whispered if I could go higher and I took it as a signal that he wanted to be finished off. I slowly glided my hand into his semi erect dick and I gave him a slow handjob for about 15 minutes and eventually sucked him off. He finished in my mouth shortly after the blowjob and thanked me for the massage and the extra service.
While his dick is absolutely massive by asian standards, I think he benefits from his smaller frame, making his dick look a lot bigger than it actually is. He looks like he's about 9 inches on camera but he's probably closer to 7.5". I am 5'10" (178cm) and I tower over him when he got up after the happy ending. He's probably around 5'3" or 5'4" (160-163cm). He came back several more times after our first encounter and we pretty much did the same thing but it's been months since I last saw him.
I think he's a straight guy who just enjoys a good handjob and head from another guy who's good at sucking dick but who knows.