Shouldn't all the people he just killed also be sent to the room since it is mission time.
Usually they only get send there if they are dieing, but still barely alive during the call. Is why we usually saw their dieing thoughts and how there have been 2 Keis as she didnt die during the suicide attempt.
Though this series has not been exactly consistent, especially this spinoff with the bad pacing.
Bit sad since the series has really big potential for spinoffs, if they wouldnt try to 1 up the original and just went with a much slower progress that is disconnected from the OG and more teamwork based.