1) Take two drinks for the OP
2) If there is a scene that exists solely for fan service (Zooming in on tits, panning body during shower/spring scenes, etc) take a drink.
3) Take a drink for magical transformation scenes
4) If there are multiple instances of fan service at the same time, take a shot (Or like three drinks or something). (Things like MC and Demon-chan mashing their tits together and stuff like that)
5) If there is dude fan service, take 3 shots (We threw this in because we predicted it would never happen. We were correct.)
6) Take two drinks for the ED.
7) Try not to die.
Once you stop watching it for the plot, and start watching it to get fucked up with some friends it becomes much more enjoyable.