Battle: Once per battle, target a card in the enemy leader's army. Move Ran into the current battlefield. Straighten her. Give the target -3F.
I was curious if Ran needed to be opposed, so I looked up the defintion of "enemy leader" on the EomE rulesheet:
leader: The Attacker and Defender are collectively known as leaders.
The enemy leader is the Attacker if you are the Defender or a
defending ally, or the Defender if you are the Attacker or an attacking
ally. Whether he has units opposing yours does not matter. The allied
leader is the opposite of the enemy leader. If you are not a leader
yourself and are nobodys ally, you have no enemy or allied leader.
Unless I am missing something, Doji Ran can move into Battlefield A by targeting a card at Battlefield B. Is this correct?