Final Fantasy Tactics Walkthrough

As a battle, this is a complete joke. It would be a much greater challenge to attempt to lose this battle rather than win it. You're only up against two Ninjas, and similar to the previous battle at Zeirchele Falls, you control Delita with Ovelia as your guest. Neither Ninja poses any significant threat to either of your characters, whether Ovelia has buffed them or not. Simply use Northswain's Strike against each Ninja and the battle is over as quickly as that.

Despite the likely steamrolling he just put upon the enemy assassins, Delita is clearly hurt after the battle and Ovelia expresses worry. Clearly, this battle was intended to provide additional color describing how Ovelia's feelings towards her original kidnapper have softened over time.