I am confused... should this have a cosplay tag or transgender for this DJ?

Eh, it's a gender swap, not cosplay or transgender.

Well, that's not something I expected to be reading. The author was right, people not into this type of stuff should have stayed away. XD It was pretty.... different to me when all was said and done, but to each their own.

should have also had a bonus page 2, with the myon getting some revenge on Reimu.

I am confused... should this have a cosplay tag or transgender for this DJ?

No. These are just 2hus that are boys.

I wonder if Youmu can still see her surroundings while she sleeps if her ghost half is still awake. They are one in the same, so in that instance she would only be half asleep. Can she still sense what's going on around her? Is it like some sort of lucid dream to her? These questions might never be answered in canon.