If you could make a poison to kill a single person, and that person was Mike, it would be Visual Novels. This poison would enter his body through the ocular nerve, spreading to the most savory parts of his brain. Then, it would set up shop - liquefying the parts that determine whether he goes potty or not. But, because he's always peeing, wherever he is, just peeing and peeing, nobody would know about the attack until it was too late.
