Pfft, lucky guess...
(It's not all Valve references though: there are also yellow/purple portals and red/green portals, though that last one probably just leads to a Christmas party.)
Wonder where the orange end goes.
...Oh, you know what I'm talking about. :3
Shouldn't a Keron much smaller compared to a human? This has been bugging me since the first time Kumimi was shown.
Edit: Nevermind, this strip fixes it. But in the beginning through about halfway or so, Kumimi was more than half as tall as Ammika.