Hello! First, thanks for your appreciation! I hope the english was enough good ^^
Then, to explain, the game criticize a bit (very a bit) the society, in the way where, the society wants us to be all the same. So it's violent, and the means to try to achieve it, are violent (that's why we have knife). Then, Charlie is a Circle but Charlie is your lovely friend, who loves u as Square, but Charlie loves u in all ways, but wants u to be good. But Charlie didn't want to join the party because Charlie knows that was a violent party. The party is a place where all the "industry" took place.
1/ We only accept Circles, and our Square had to adapt to get in.
2/ You can see the word play "Tomat'hoe's, which has the meaning of a "party", but it's mostly a word play with the agriculture. Tomatoes, and the hoe, which is a tool. At the end, Circles are "killing" tomatoes in a system of exploitation.
But tbh, I think I'm not totally conscious about my game, I need to take a step back. My very first idea was just a square which can't enter in the can aha! But here are the meanings that I can give you right now. Hope it would help you. :)
Have a nice day!