Chocotto Sister

Haruma Kawagoe is an only child. Years ago, around Christmas, his mother lost the baby who would have been his younger sister. That night, a young Haruma knelt and prayed sincerely: "Please make my mother better, and give me a little sister." Time passed, and Haruma almost forgot his wish. But Santa didn’t... so one Christmas, when Haruma least expects it, he gets an unexpected gift-a sister named Choko.