A doujin by hiroyuki. Began as a web comic, then published and expanded in print form at the 2008 Winter Comiket.

Plot summary: Reimu tours Gensokyo, raping its inhabitants, while Rinnosuke takes pictures. Technically work safe.

(The doujin, that is, not the pictures. We imagine.)

Chapter 2: pool #1382
Chapter 3: pool #2145
Chapter 4: pool #2648
Chapter 5: pool #4158