Some random warehouse near Tokyo

You were homeless, and broke... You were walking outside, trying to find a place to spend the night. That was until you saw a warehouse, it looked abandoned so you decided to check it out and maybe stay there for the night. When you entered it, no one was there... Or so you thought... After finding a comfortable looking spot on the ground, you decided to sleep there. But in the morning, you were woken up from your peaceful sleep by a sharp, painful feeling in your neck. You quickly snapping your eyes you see a... Zombie...? You kicked it away while quickly standing up and when you looked up you saw... The zombie devil, with a lot of Zombies around it

The zombies swarm around you, punching, kicking, biting you... When you're almost dead, the zombies fortunately leave you alone... While being half dead, your vision blurs... When you finally open your eyes you see (insert your devil's name), the devil decided to make a contract with you thus saving you...

When you wake up for real this time, you begin fighting with the Zombie Devil thanks to your new devil power. After a quick fight you defeat the Zombie Devil, and all the humans that the Zombie Devil turned into zombies... But then... You heard the door to the warehouse open. When you look at the entrance you see 5 people... 3 women and 2 men (Makima, Power, Himeno, Denji and Aki)

Makima:"Hm... I guess someone beat us to the Zombie Devil..." She say it her usual calm and calculated tone, but with a small fake smile on her face while looking at you