The story is centered around Filena, a princess who was raised as a boy after her kingdom was conquered.

Meet Chako and her friends from the Cosplay Association at East Oizuki Academy! They're the hottest new cosplay team in Japan...fresh from a winning streak of local battles, they're set to sweep the Cosplay World Series! Yeah, right. In reality, Chako and her friends are barely able to keep their club alive at all. Feeble club membership and a lack of sponsorship might be the end of their cosplay dreams before they can even start. But don't you dare underestimate this group of spunky girls! They'll survive a barrage of pervy newcomers, cosplay rivalries, costume disasters and dating mishaps in order to reach their ultimate goal of competing in the World Series. The clothing flies as the girls suit up (and strip down) for Cosplay Complex!

Since the beginning of time, monstrous Demons and noble Guardians have battled for Earth - the everlasting gift of the one great Mother, creator of all life. A deep hatred burns between Demon and Guardian; the Guardians prevented the Demons from destroying humanity and the world itself. Eons later, Neo-Shinjuku City: few Demons or Guardians remain to continue their epic war. Humans rule the Earth, with no real memory of either Demons or Guardians. Yet deep within the dark underworld of the city, one supreme Demon is alive and plotting to subjugate mankind. Only one Guardian is left to do battle, and the fate of the human race is at stake. Based on the Graphic Novel "Twilight of the Dark Master (Shihaisha no Tasogare)" (Shinshokan) by Saki Okuse (Source: DVD Back Cover)

High school student Morisato Ibuki has a startling dream about kissing a prince on a white horse. The next day, the prince from her dream, Ebisu Naoto, shows up as a transfer student at her school and a guest at her house. He had indeed kissed her, in an attempt to wake her up in the morning, although he claims that she kissed him. Ibuki is smitten with Naoto, but he seems to have other commitments, to American football and to a mysterious girl called Kawahara Izumi. Meanwhile, Nitta, a shy boy in Ibuki's class, has a crush on her. Will true love eventually find a way?