HoiHoi-san, full title , is a manga by Kunihiko Tanaka that spawned a PlayStation 2 game and a ten-minute OVA (sold with first printing of manga tankōbon). In the year 20XX, insects have become immune to all pesticides. To combat the rising plague of cockroaches and other household pests, the tiny, doll-like extermination gynoids known as "Hoihoi-san" were created. They can hunt down insects and kill them with such miniaturized weapons as minuscule machine guns and tiny combat knives. They can also (and at the same time) be treated as dolls, by dressing them up in costumes and buying accessories for them. The main robot of the anime wears a maid uniform and rabbit ears as accessories. History It started out as a manga title serialized in Japanese language monthly magazine Dengeki Daioh published by MediaWorks, and later branched out to PlayStation 2 as a game and then further into numerous other media channels. The setting is in year 20XX at a time when insects are immune to all insecticides, so Japanese pharmaceutical companies have had to come up with the next level in insect extermination: small but heavily armed robots. Hoihoi-san is the bug killing robot of the title, a 10.5 cm tall doll like robot that comes with a wide range of weapons. With this character a new level has been attained in the girls-with-guns genre: capable of an impressive rate of fire, handles a sword equally well, is dressed up very cutely, complete with bow ties and booties and an expressionless face. The Hoihoi-san series of products parodies the girls with guns genre, robot girls as companions and the otaku. Characters Not all characters in the manga appear in the OVA. The ones in the OVA are indicated by the presence of the respective voice actor in the list below. A line of insect exterminating robots made by Mars Pharmaceuticals. The designation "ID-3" stands for Interceptor Doll (Version) 3. A lonely otaku whose only company is the Hoihoi-san that he dotes and spend his money on. Kimiko works in a Kyoto pharmacy frequented by Aburatsubo-kun, selling bug killing robots and accessories. She wants a robot doll but cannot stomach the carnage. A friend of Kimiko-chan. The owner of the pharmacy. Furuyashiki works at Mars Pharmaceuticals, proponent of odd Hoihoi-san upgrades. Suspended from work and subsequently resigned after photos of himself wearing Hoihoi-san style maid dress were posted