What's the source of this, anyway?

I think its takaku toshihiko, but I am not sure can anyone confirm?

[Takaku-ya]Touhou Enchantresses' Dance 1

Yup it is as s1eth said so Krugger is right, well the flaming magic penis and sadism bit is giveaway for his artwork lol.

Thought it looked familiar if i remember 1-5 are not translated and I think up to 9 are

as of right now, 1,2, and 6-9 are translated. 3-5 and 10 aren't yet sadly.