The follow article is about a subject with limited information and sources. It's content can't be as accurate.
Ojamajo Doremi Sharp: "Together with Hana-chan" is an original video animation distributed by Kōdansha via their magazines; Tanoshī Yōchien and Otomodachi. It is the first Ojamajo Doremi OVA to have been distributed by Kōdansha, being succeeded by Motto! Ojamajo Doremi: "Together with Mama" Tell me ♪ Momo-chan Snack Cooking and Ojamajo Doremi Dokkān!: From Sharp to Dokkan! Hana-chan is Pumped Up.
There is very little information to be found regarding this OVA. Exactly how this OVA was distributed is unconfirmed and content of the OVA itself is unknown.