Ginga Ojou-sama Densetsu Yuna: Kanashimi no Siren  

Galaxy Fraulein Yuna, Galaxy Fraulein Yuna OVA 1, Galaxy Fraulein Yuna: Siren`s Sadness, Ginga Ojousama Densetsu Yuna, Sorrowful Saline, 銀河お嬢様伝説ユナ ~哀しみのセイレーン~, Ginga Ojousama Densetsu Yuna: Kanashimi no Siren

A sixteen-year-old girl named Yuna Kagurazaka, who was clumsy but had a pure heart, won an intergalactic contest and became known as the Savior of Light. She piloted the mecha El Line to maintain peace in the universe. However, her world turned upside down when she was falsely accused of destroying a city with El Line by Misaki Ichijouin, a special agent from the Galaxy Alliance. Despite this, Misaki soon realized that she had been deceived and joined forces with Yuna's friends to free her and save the galaxy before an evil force regained power.