One Shot Bug Killer Interceptor Doll Hoi Hoi San
 

Hoi Hoi San was a PS2 game where the player assumes the role of a very small android doll that patrols for insects because insects have become immune to all forms of pesticides.

There was a one episode OVA that still is very popular and was done to promote the game. Copies of the game still show up on Ebay from time to time.

YouTube - Ichigeki Sacchuu!! Hoihoi-san OVA 01


Due to the continued popularity of the game and the OVA there will be a 13 episode series coming out in 2008.

That's one long ass title for a game/anime.

So the anime which is named Zero no Tsukaima Futatsuki no Kishi doesn't got a long name? :p (thats tho the Second Season)

It wouldnt do good to call it "Zero Louise season two"

The anime is usually just called "Hoi Hoi San"