The 5th Commandment says "thou shall not kill". But Catholics have interpreted it to many other branches. For example one is to not get drunk. In my comic (which takes place in a bar), a man was going to get drunk because he wants to. This is a sin because when you drink so much as to where you get to a point of being drunk, you can't control your actions. Because of this, you might die or kill someone which goes against the 5th Commandment. Drinking itself is not a sin, but drinking to a point of being drunk is a sin and should not be done by Catholics.
