Grim as an emotion, but I doubt that's what you're referring to. Is Grimm what you fight, or what allows you to fight? [ It's perhaps one of the more intelligent things Dazai has said -- it's clear that underneath the lackadaisical whimsy is a certain degree of brainpower... it's just questionable how often he uses it. ]

At least that means you're a solid fighter, right? Oh, and I imagine you're used to helping minimize casualties! That certainly seems like it will come in handy here.