Relevant Text-
Immobile Stance: Battle: Target one of your Personalities: Until the battle ends, he has +5F while opposed. While he is at the current battlefield and the enemy side has more units than yours, cards' effects can not destroy him. If you would win a battle as Attacker or Defender while he is there, it is a tie instead.
Does it Cause a Tie in a battle if no units are opposing? Examples:
I send 4F Hida Kaoru to attack, they don't defend. I play Immobile stance then harpoon their Champion in to kill with Seventh Tower. Once their big guy's dead, Kaoru is unopposed again. Would I tie at the end of battle and lose Kaoru?
Second Example: I'm Defending with my 1F Doji Whoever against a 9F army of 2 units. I drop 2 Immobile Stances and jump to 11F. They Stay their Blades and Weight the Cost, thus removing my opposition. Same effect?