Yoriko Nagata

Dog Days takes place in the world of Flonyard, an alternate world where its inhabitants look like humans but with animal ears. When Cinque Izumi suddenly gets summoned to this alternate world he is appointed as a Hero. How will he lead his life and interact with the various characters in this new world?

The story begins with Keita Suminoe, a male third-year junior-high school student studying for his high school entrance exams. He is living in a home with his older twin stepsisters, Ako and Riko, who share no blood relation to him, and they help him prepare for his exams. Even though he initially dislikes himself for it, he begins to become attracted to his two step-sisters, and his two parents encourage him to eventually get married to one of them.

The Sakuragoaka Girls' Academy curriculum traditionally focuses on the three "R"s of reading, writing and arithmetic, but Ritsu Tainaka wants to add two more "R"s: Rock and Roll! To do that, however, Ritsu has to save the Light Music Club from being shut down due to little problems like not having any other members or a faculty advisor. After strong-arming her best friend Mio into joining and convincing Tsumugi Kotobuki to make it a trio, Ritsu's would-be rockers are soon only one talented guitarist short of the quartet they need for school approval. What they get, unfortunately, is Yui Hirasawa, who's never held a guitar in her life, but she's determined to learn! Will the school halls come alive with the sound of music?

Graduation draws near for Yui, Ritsu, Mio and Tsumugi, the four 3rd-year students of the Light Music Club. They, together with Azusa, decide to go on a post-graduation trip. Their destination, decided by Lot, is London!