Interestingly different, Hyakko OVA doesn't seem much of an OVA, in my opinion, as much as I would expect an OVA to be some sort of a short movie. Running for about 10 minutes, this OVA could only pass as a short special or as one of its regular series episodes showing a very different side of Kazamatsuri Touma since in this one she hangs out and gets infected with her wild opposite, Torako's antics.
  

What makes Hyakko OVA seem more like a regular episode is that it chronicles another crazy day in the lives of Kamizono Gakuen students, much like how a regular fun-filled episode of the Hyakko series would go, only in this one, It's just Touma and Torako trying out a bunch of different sweets.
  

Touma's favorite café has closed down and apparently she is looking for another quiet spot where she and her reading fetish could hang out. Torako happened to overhear the situation and impulsively pounced on the chance to catch Touma's friendly side. With Torako's legendary persistence, Touma unwittingly, and just as to shut Torako up, accepted the offer. But it isn't just the quiet café, the weirdness of its "master", or the mounds of pastries and sweets. It's more of Torako's crazy and infectious antics.



I have read some reviews about the OVA mainly showing the disappointment of some fans, perhaps due to its length or the lack of a better and proper story, yet in my opinion, its not that bad or perhaps it could have been released with other, maybe similar, story shorts although I would say, this is better than nothing. Still, I had a good laugh.