This is a very short piece I did in 2008.
Zim's POV.
'You.' Lips formed syllables but there was no air to bring them fully to life.
The glass was cool and smooth against his face. It would have been soothing but for the purpose it served.
The person on the other side was slight and gaunt. He was tall too, perhaps even more so than the Tallest, but for now he was slumped against one plaster wall, looking crumpled, tired, and strangely diluted.
Now the other's fingers splayed themselves across the glass and imagined shattering it to three-thousand pieces...
Such a thin barrier.