Masterpiece of a prequel! Takes the light and ecchi series that was Nise and turns it upside-down with this prequel! It solely focuses on Hanekawa's side of the story and the events that lead up to Bake without missing a beat. Add Araragi's amazing dialogue, perspective, and more background on one of the main characters and you're in for quite a treat.
I seriously cannot put into words how awesome this prequel was..This is probably one of the best Prequels in all of anime. (Again, it is important to stress the importance of the aired order for maximum enjoyment!)