Hetalia World Series is a oNA (web) anime that premiered in spring 2010, produced by Studio DEEN.

About the production: the story comes from a manga, there are 48 episodes of about 5 minutes and its current status is "finished".

Its main genres are comedy, with themes such as Historical, Parody, Educational and Ensemble Cast.

On AniList, Hetalia World Series has an average score of 68%, a good score, and appears on 17,260 users' lists.

The franchise continues in or follows from: Hetalia Axis Powers and Hetalia: The Beautiful World.

Based on a popular web-released manga series by Hidekazu Himaruya, this has been described as a "cynical gag" story set in Europe in the years between WW1 and WW2 (1915-1939), using exaggerated caricatures of the different nationalities as portrayed by a gaggle of bishōnen. For example, the Italia Veneziano character is into pasta and women. The Deutsche (German) bishi loves potatoes and sausages, and Nippon is an otaku boy. Installments of the manga have jumped back and forth in setting from the ancient times to modern-day geopolitics. The manga's title comes the Japanese words for "useless" (hetare) and Italy (Italia). (Source: ANI)

Official synopsis from AniList.