The two Half-Immortals who arrived at the Branch Director's Chambers were Felix and Raizen. They were not regulars in this place, but they were summoned here as soon as Vale showed up.
When they reached the branch, they already felt the shockwaves of the fight and became curious. They didn't hurry to see the situation but waited until the fight was over.
After all, they don't want to get in the way of a True Immortal. They might even become hostages of the enemy, so they knew it was better to keep their distance. Needless to say, whoever was fighting equally to a True Immortal must have incredible power.
After some time, they entered the building and met the culprit.
"Ahem… It seems that an enemy managed to enter our territory… Thank you for saving us, Sir Immortal. I'm Felix, I'm one of the Bureau's Council."