Mahou Shoujo Lyrical Nanoha dj - Baka Survivor

This doujin includes the Materials (the counterparts of Nanoha, Fate and Hayate created by the book of darkness) from the PSP Nanoha game. But if you're not familiar with them, you don't need to worry, you will still have fun watching Fate compete with Raijin for Nanoha's affection.