50 Rules For Teenagers Manhwa

From ADV:
While most people her age are having fun, with little or no worries, Mi-Roo is stuck playing the role of student, homemaker and full-time babysitter to her siblings. With a mother who is gone more than half of the time, an overworked older sister who's a manhwa artist, and a lazy twin brother who serves only as a hindrance, Mi-Roo is trapped in a constant balancing act of housework and schoolwork. She’s no superhero though, and it will take more than her undaunted determination to stay afloat!