Nathan could guess why these two end up being covered by bandages. In fact, the answer would probably never change. It was because of him.
They must have been so concerned that they abandoned the competition and focused on dealing with the enemies, even if it meant they would be out of commission after this.
As a summoner, Nathan felt blessed to have them as his familiars.
That was why, instead of asking them about it, he simply shouted. "Sera. Switch!"
Sera was startled. The order confused her for a moment, but after taking another glance, his words felt so clear.
In that instant, she retracted her Synchronization on Nathan and poured everything into Fenrir and Nidhogg.