Sore Ike! Anpanman no Hiragana Asobi: Hajimete no AIUEO
Genres: Fantasy
Type: OVA, Episodes: 1
Aired: Nov 21, 2003
Source: Original
Rating: G - All Ages
Synopsis:
An educational Sore Ike! Anpanman OVA. The classic characters Anpanman and Baikinman help "N" get back to Hiragana Land to find his place there. While there, they enjoy lots of things found in Hiragana Land. 

(Source: AniDB)