Ethan couldn't use his sword and he couldn't make swords out of magic like Isabella did, so the only thing he could do was dodge and run.
[Advance Barrier]
Ethan created a barrier in front of himself as Isabella was in front of him, he needed space to cast spells and the barrier was going to block her first attack.
"Haaa!!" Isabella mouthed as she swung her sword as hard as she could toward Ethan but the barrier in front of him repelled the strike and Ethan quickly cast two fireball spells.
[Fireball]
Isabella saw Ethan and quickly dissolved her ice swords creating a small shield in front of herself that stopped Ethan's attack before she jumped backward, and created an ice wall in front of herself.
The clash created a small amount of mist and Ethan quickly used the opportunity to move backward.
[Wind cutter]