There's a time Tsugumi goes off to find her rat
And a time You goes off to a maze
And then there's a point where a can gets kicked and everyone's like WTF everyone's here who did that.
Also Sara was in the vents that time
I don't recall the control room ever being used to find people and there were many times when it would be useful to.
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No problem!
This is a cute and pop genocide of love!