Prime Rose プライム・ローズ

Plot

Prime Rose is the story of a young princess/gladiator named Emiya who spurns the advances of the young emperor (much to the fury of her father) and through a series of adventures discovers that the Emperor is corrupt and vows his overthrow using the unusual ability that she discovers after an encounter with a seemingly homeless old man.

This is one of the last fully original stories completed by Tezuka Osamu.