<i>Dog Days</i> takes place in the world of Flonyard, an alternate Earth inhabited by beings who resemble humans, but also have the ears and tails of specific animals. The Republic of Biscotti, a union of dog-like citizens, has come under attack by the feline forces of the Galette Leo Knights. In an effort to save Biscotti, Princess Millhiore summons a champion from another world in order to defend her people. That champion is Cinque Izumi, a normal junior high student from Earth.<br>
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Agreeing to assist Biscotti, Cinque retrieves a sacred weapon called the Palladion and prepares for war. In Flonyard, wars are fought with no casualties and are more akin to sports competitions with the goal of raising money for the participating kingdoms. Cinque is successful in his role as Biscotti’s champion, but learns that a summoned champion cannot be returned to their home world. The scientists of Biscotti will endeavor to find a way for Cinque to return home, but until they figure something out, he must serve Princess Millhiore by continuing to fight as Biscotti’s hero.

Episode 01 - A Hero is Born!

Episode 02 - The First Battle!

Episode 03 - I Want to Go Back! I Can't Go Back? Hero in Flonyard

Episode 04 - Charge! Princess Recovery Battle!!

Episode 05 - Fierce Battle at Fortress Mion!

Episode 06 - Star Reading Princess

Episode 07 - Declaration of War

Episode 08 - The War Starts

Episode 09 - Battle of Grana Fortress

Episode 10 - Hero, Princess, and a Ray of Hope

Episode 11 - Like a Flower Dancing in the Night Sky

Episode 12 - Four Conditions

Episode 13 - The Promise

Aniplex

Seven Arcs