Tou-san Maigo
English name: I Lost My Dad!
Type: OVA, Episodes: 6
Aired: Jun 27, 2001
Source: Picture book
Rating: G - All Ages
Synopsis:
Episode 1 - Guru Guru Doubutsu
Episode 2 - Batta-kun
Episode 3 - Akachan
Episode 4 - Tou-san Maigo
Episode 5 - Shiritori Guru Guru
Episode 6 - Umi wa Hiroi ne, Ojii-chan

(Source: Official Site)