Chocotto Sister is a tV series anime that premiered in summer 2006, produced by Nomad.

About the production: the story comes from a manga, there are 24 episodes of about 24 minutes and its current status is "finished".

Its main genres are comedy, drama and romance, with themes such as Seinen, Nudity, College and Female Protagonist.

On AniList, Chocotto Sister has an average score of 63%, an average score, and appears on 4,517 users' lists.

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)

Official synopsis from AniList.