Leviathan: The Last Defense is a tV series anime that premiered in spring 2013.

About the production: the story comes from a video game, there are 13 episodes of about 20 minutes and its current status is "finished".

Its main genres are comedy and fantasy, with themes such as Dragons, Female Protagonist, Primarily Female Cast and Henshin.

On AniList, Leviathan: The Last Defense has an average score of 59%, an average score, and appears on 6,745 users' lists.

The story is set in Aquafall, a fantasy world abound with water and greenery, and populated by dragons and fairies. Meteorites suddenly bring forth evil creatures that threaten all living things on the planet. The fairy Syrup assembles the Aquafall Defense Force, with three girls of the dragon clans as recruits. The story follows Syrup and the dragon girls Leviathan, Bahamut, and Jörmungandr as they work together to battle enemies and grow up. (Source: Anime News Network)

Official synopsis from AniList.