Dogs Dayドッグデイズは終わった！

Dog Days (ドッグデイズ Doggu Deizu?) is a 2011 Japanese fantasy anime television series created by Masaki Tsuzuki and produced by Seven Arcs and Aniplex under the direction of Keizo Kusakawa. The series aired on Tokyo MX and other channels from April 2, 2011 to June 25, 2011. The story revolves around a boy named Cinque Izumi, who is summoned to an alternate world by Princess Millhiore in order to defend Millhiore's country from the neighboring kingdom of Galette

Plot

Cinque Izumi is a cheerful and athletic half-Japanese, half-English boy who studies at Kinokawa International School in Japan, and has a normal life everyday until he suddenly got summoned to the alternate world of Flonyard (フロニャルド Furonyarudo?). The people there look no different from humans, except for one thing; they have animal ears and tails. The one who summoned him is Millhiore, the dog-like Princess of the Biscotti Republic (ビスコッティ共和国?), who requested his assistance in their war against the forces of the feline-like Galette Lion Army (ガレット獅子団領 Garetto Shishi Gundan?).
After responding to Millhiore's plea, he receives a sacred weapon, the Palladion (パラディオン Paradion?), and is appointed as a Hero to fight for Biscotti in a war that unlike the ones in Earth, is waged with special rules and no casualties, in a fashion similar to a sports competition with the purpose to raise funds for the Kingdoms involved, where the winner faction claims a larger sum than the losing side. After winning his first battle for Biscotti, Cinque learns that when a hero is summoned into Flonyard he becomes unable to return to his homeworld, a fact that Millhiore also was unaware of.
The scientists of Biscotti promise to Cinque to find a way for him to return home in 16 days, the remaining time until his meeting with his friend Rebecca Anderson whom he promised to spend the last three days of his Spring Break with. Until then, he decides to keep serving Millhiore as Biscotti's hero.

Credit :

http://en.wikipedia.org/wiki/Dog_Days_(anime)