Isuzu Emi is often around the president of the detention club Takayanagi Mitsuomi, and that’s not a coincidence. Years ago, he saves her life, and since then she has always been by his side. Isuzu Emi is in love with him, and despite that Mitsuomi doesn’t share her feelings, she always takes care of him and is around when he needs her. Her fighting style includes enourmous amount of knives. One could wonder where she is keeping all of them. But there is a rational explanation for everything. Her true, ugly side is revealed in the end of her fight with Natsume Maya.