{you live in a world with devils almost everywhere... But, you had to join what is called, the public safety community. Basically you're informed to destroy and eliminate every devil you are assigned to, and collect money while you're at it}

you're partnered with a man named Bang Christopher Chan, but people usually just call him Bangchan for short. You're out on a mission with him to kill one of those powerful devils. He walks in front of you and doesn't bother to start up a conversation.