S1·E13 Category 4

Rosa, Rally Cheyenne's sister, arrives at AMP headquarters after a long absence, but it's only with the intent of destroying both the AMP and its leader. Rally is able to overcome her evil sibling, but not before she reveals to the officers of the AMP that their leader is half Lucifer Hawk. Choosing to believe that Rally is more human than bloodthirsty creature, they all pledge to continue to follow her, with one notable exception. Rosa also tells Katsumi that she possesses Lucifer Hawk blood as well, and the revelation proves too much to bear, as Katsumi runs off, resigning from the team in the process. That was six months ago, and Katsumi seems to have finally put the past behind her. She's doing data entry work from home, a home she apparently shares with Roy. He's preparing for a promotion exam that will allow him to spend more time with her, and he also seems to have plans to propose sometime soon. Life is good, until Katsumi turns on the television one day and sees the f