@Guspaz it's more like "give avay your gun and run away from the battlefield, so you can be alive", i think

It’s a little hypocritical of blue hair. Why should red hair give up the contract? Why shouldn’t blue hair do so instead? Is it just a sense of arrogant superiority?

The first few panels seem to be in non linear order. I was a bit confused.

"think clearly"... Does he even payed attention to who he made a contract with?

Well, thinking isn't his strong suit :)