Wellber no Monogatari ~Sisters of Wellber~
With negotiations breaking down between the Kingdoms of Wellber and Sangatras, it looks as if war is imminent. To prevent the bloodshed, Princess Rita, in accordance with her father, agrees to marry the Prince of Sangatras.
On the evening of their first meeting, tragedy occurs. The Prince is found stabbed to death, and Princess Rita is seen standing over his body holding a knife! Talk about being in the wrong place at the wrong time! The sly thief, Tina, didn't intend to witness the Prince's murder! She had other things in mind. As fate would have it, Tina unwillingly helps the Princess escape. Now she finds herself protecting the "Wanted" girl as they venture to Greedom, a neutral land that may hold all the answers. The journey to Greedom is treacherous, but the two have help in the form of a fairy and a wise-cracking tank? (Now that's original!)
Can this group make it to Greedom before disaster strikes?!?
This anime appears to take place during Medieval times.