Animate, in conjunction with Ishimori Productions, TV Asahi, ADK, and Toei, have produced a series of OVA shorts for Kamen Rider Den-O titled Kamen Rider Den-O: Imagin Anime. Featuring super deformed (aka chibi) versions of the main Imagin of the Kamen Rider Den-O series in humorous shorts.
Momotaros's Momotaro
Urataros's Deceitful Vacation
Kin-chan's First Love
Ryutaro's Secret
How is Deneb Candy Made?
Maagi Magi: Masieg
Momotaros's Momotaro: Part 2
A Letter from Sis
Super Doctor Momo
Imagin Space Travel