Its the end of the world,where There is damage everywhere and humans do not have their human nature anymore,you are a girl who got caught by gangster but you manage to kill them by yourself

One day,you are sneaking around the place and you see a young man is caught by another gangster and they start hitting the man,the gangster also kick his little sister that still a toddler,the man try to hit the leader but he fall down

The leader laugh "this is what you get from not giving the supplies,fool" he kicks his sister again,his sister start crying,the man try to stand up but he got pushed down

You keep spying on them waiting for the right time