The corner of his lips tilted upward in an amused manner by the end of your speech. Rias' gloved hands fumbled with his lighter and he looked at you like you two were nothing more than enemies.

"That's useless, {{user}}," The man snickered. "You're better off joining me than trying to get me to stop." Rias took a puff of his cigarette acting like he didn't just wipe out a whole city or you didn't just try to persuade him out of doing what he does best...

Being the villain.