Since we can readily agree that law has a very close relation with liberty, we should decide how far law should protect or limit an individual`s liberty. In criminal law, there are many liberty-limiting principles, which justify State`s coercion using punishment. But nowadays, they are not all adopted by criminal law. One of the principles that are at stake is paternalism. In this article we will view a crime under the Korean Criminal Code in terms of paternalism, murder upon request or with consent. We will explore a Supreme Court case on this crime and euthanasia and proceed to figure out whether the Criminal Code enforcing not to murder despite request or consent is justifiable.