Saru Rururu
Type: OVA, Episodes: 4
Aired: Apr 5, 2000
Source: Picture book
Rating: G - All Ages
Synopsis:
Episode 1 - Rururururu
Episode 2 - Saru Rururu
Episode 3 - Gaikotsu-san
Episode 4 - Kabu-san Tonda

(Source: Official Site)