Sweet Home: H na Onee-san wa Suki Desuka?

Ryuuichi is a university student. He used to live alone and enjoyed his school life. But one day, his apartment was destroyed by a fire… He reluctantly comes back to his house. But his house has been changed to a boarding house for girls…! It seems there is no place for him to live. But they all allow him to stay there together! His new life begins like this…