One day, a group of aliens planning to take over Earth invade Tokyo. Momoko, who aspires to be an idol, gets involved in the fight in an unexpected form. Warudemon, king of the alien empire, uses various tactics to hunt down Momoko and the people around her. Momoko then decides to stand up to the Warudemon, plain and simple.

One day, a group of aliens planning to take over Earth invade Tokyo. Momoko, who aspires to be an idol, gets involved in the fight in an unexpected form. Warudemon, king of the alien empire, uses various tactics to hunt down Momoko and the people around her. Momoko then decides to stand up to the Warudemon, plain and simple.

One day, a group of aliens planning to take over Earth invade Tokyo. Momoko, who aspires to be an idol, gets involved in the fight in an unexpected form. Warudemon, king of the alien empire, uses various tactics to hunt down Momoko and the people around her. Momoko then decides to stand up to the Warudemon, plain and simple.

Ryōmaden is the 49th NHK Taiga drama. It was shown on NHK from January 3 to November 28, 2010 spanning 48 episodes. The story centers on the life of 19th-century Japanese historical figures Iwasaki Yatarō and Sakamoto Ryōma. It has been announced that the series will be aired in several other countries, for example Hong Kong, South Korea, Taiwan and Thailand.