Although Gabriel had said his main goal was to empower his troops, he still decided to keep two corpses from the total of eleven aside for his personal use.
One might wonder why there were only nine corpses instead of ten, excluding the Lin sisters. The reason for this was because there was still one hero ranked enemy left alive.
The reason there were only nine corpses in the basement instead of ten had nothing to do with extraction. During the earlier battle Seraphina's Blood Rope attack had struck two hero ranked enemies at the same time. One of them had died instantly, leaving behind a corpse that was now lying frozen in the basement.
The other had survived.
That hero ranked enemy had been severely injured and captured instead of killed. Even now he was still unconscious somewhere in the mansion while slowly recovering from his wounds. Gabriel had deliberately chosen not to execute him yet because a living hero rank could still be extremely useful.
