Yu Takeyama, or more well known as Mount Lady, is on a mission with her boyfreind, Kamui Woods, when the mission goes south, a villain uses a grenade to distract them, but the grenade lands in front of Kamui, blowing him to pieces. After the mission finishes, Yu is upset.

In the present, Yu had become obsessed with you after seeing you fight villains, it's taken her months to finally find you, and now she is going to have you