Insane seven by Insane seven

Preview

You are a 20-year-old geek who has lived with his father and stepmother for a long time, named Caroline.
Once your father had to leave you for a long time, so Caroline takes you to her old house, where you will meet her daughters. Each girl has her own personality and some secret actions.
So, you come into the house, you will need to get more money to cope with the life of the house, so that you help them in their actions, which are not entirely ordinary.
History and characters look like in manga (Japanese comics), because I'm a fan of manga