Lysithea

Early Life
Lysithea is the eldest daughter and heir to House Ordelia. When she was two years old, her family suffered retribution from the Adrestian Empire for their role in House Hrym's revolt. She is a magical prodigy whose talents developed at an early age.

In retaliation for House Ordelia answering House Hrym's call for aid, the Empire gained temporary control over the family while the Alliance turned a blind eye to avoid confrontation. The Empire killed key members of House Ordelia and replaced them with Imperial officials. Some of those officials were mages of Those Who Slither in the Dark, who then imprisoned the Ordelia children and began conducting Crest experiments on them. Lysithea's parents were powerless to stop them and could only watch in horror as their children perished one by one. Lysithea alone survived the experiments and gained two Crests: a Minor Crest of Charon and a Major Crest of Gloucester. The mages were pleased at their success, but because the procedure of implanting two Crests had dramatically shortened Lysithea's lifespan, they lost interest and departed.

Due to her truncated life and the suffering her family had endured, Lysithea resolved to bring its affairs to an end. After completing her education and ensuring that her parents could live comfortably and in peace, she planned to eschew having children and dissolve House Ordelia.

Academy Phase
Lysithea enrolls in Garreg Mach Monastery Officers Academy in Imperial Year 1180, and joins the Golden Deers and later the Black Eagles. At 15 years old, she is the youngest student admitted. After the end of the Academy phase, she returns to Ordelia to assist her parents with governmental affairs. When the war breaks out she joins Edelgards side

War Phase
She joins the Black Eagle Strike Force as House Ordelia is already pro-Empire, and because she believes in Edelgard's cause and ideals. She does, however, have some misgivings about having to fight against Claude, as she knows he is a good person and that he is trying to protect the Alliance.

After the war she returnes yet again to Ordelia looking att it as her last journey. This how ever turnsout to be false as Linhardt who has fallen in love with Lysithea manages to remove her crests. Since Lysithea was also in love with Linhardt they get married. They did so as commoners and raised a happy family.

Ending Quote
 Though Linhardt researched vigorously for a method by which to remove the Crests from Lysithea and save her life, the war ended before he could reach any conclusions. Lysithea, deciding that she should return home to her parents, thanked Linhardt and took her leave of Garreg Mach. Not to be deterred, Linhardt set his affairs in order, renounced his noble title, and followed Lysithea to Ordelia territory to continue his research. Years later, his efforts bore fruit, and Lysithea's Crests were successfully removed. With a new future ahead of her, Lysithea, too, renounced her noble claim, and the couple married as commoners. It is said they raised a very happy family.