KY actually stands for "Kuuki Yome" which basically means "Try to understand the situation" in a sort of "please don't make me spell this out" kind of way, and tsundere is a Japanese word for someone who acts mean/angry, but turns out to be sweet underneath.
I was laughing so hard drawing the "fanservice" at points I could not see straight, you don't even know.
YOU SHOULD ALL PLAY STAR CONTROL 2 BY THE WAY
For the record it's entirely possible to have ZEX and Talana be alive at the same time, you just don't give ZEX his beast. 8D