Haruma Kawagoe is an only child. A long time ago, at Christmastime, 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.

Chocotto Sister (TV):

• 1. Present is little sister?
• 2. The first new year
• 3. The New Manager Has Arrived
• 4. Black Valentine Day
• 5. To buy a bra
• 6. Easy-to-Understand Lecture on Public Baths
• 7. Cheerful, Heartbroken, Depressed
• 8. Draft
• 9. Buds of Love
• 10. Let's Hot Spring!
• 11. Love, Gone
• 12. A Downpour, and then...
• 13. First with Yuri-pyon
• 14. Neko-nyan and Brassieres
• 15. At the Pool, Japun!
• 16. Dokiwaku Summer Festival
• 17. Noisy Tea Party
• 18. Let's Meow-Sing!
• 19. The Idol's Melancholy
• 20. My Kitten
• 21. Let's Amusement Park!
• 22. First Master
• 23. Wish
• 24. Happy Christmas