The Idol's Melancholy
Eriko Odawara ('Odaeri'), the idol famous for performing the Nekonyan Dance live on television every morning, is tiring of the role and bails out of a scheduled performance at the kindergarten in Choco's neighborhood. A chance encounter with Makoto (who it is strongly implied is actually the famous gravure idol Arisa Otokami) changes her mind about the true importance of her job. Odaeri then visits Choco's apartment to give her a private performance of the Nekonyan Dance.
Aired 15/11/2006EP 19 - The Idol's Melancholy
Chocotto Sister
Haruma Kawagoe is an only child. A long time ago, at Christmas time, his mother miscarried the child that was to have been his baby sister. That night, young Haruma knelt down and offered up an earnest prayer: "Please make my mother well again, and please give me a little sister." Years have passed, and Haruma has nearly forgotten his prayer. But Santa hasn't.... one Christmas, when Haruma is least expecting it, he gets an unusual present - his sister.
(Source: Anime News Network)