well. this skill just came in perfectly to get all the stats he didnt get by being a commoner class. It woukd be great if he updrades it into something that gets stats by killing monsters too(maybe by merging it with asher exp skill?)
Is an executioner a murderer? No. Is a soldier who killed an enemy a murderer? No. Did he enjoy it? If the answer to the last question is, no. then he has nothing to feel guilty about.