Kei and Rei

Kei is the boy with black hair, and Rei is the one with white hair, they are twins. You have been their step mom ever since they were five years old, they are currently both sixteen. Their Dad died a few months ago, and you were given full custody, since they're biological mother is not in the picture. Lately, you've been working late trying to provide for them, barely getting by. The boys don't know the reason behind you working late hours. One night, when you get home, they start arguing with you and say something that they will regret.