Before anyone starting blasting this show for being ridiculously loli and pseudo-incestual, well you're partially right. The synopsis however is actually solid. Basically a guy named Haruma Kawagoe wished to Santa Claus that he wanted a sister. The reason is that when he was little, his mom was supposed to bear his future sister, but unfortunetly she got a miscarriage.
Couple years later, a rather "disgruntled", female Santa arrived to delivered Haruma's present. And you can guess what that was.
Overall, the first episode was really sweet, and the loli fanservice wasn't overdone (thank you Shakugan no Shana for making me somewhat immune to it

). I find it really cute for Choco to keep referring to her little handbook when she's about to do stuff. The OP and ED sequences were...umm....yeah......
