Fall in LOVE

It is the season of summer. The protagonist has failed to clear his college entrance exams for the 2nd time. His parents forced him to enroll at a live-in prepatory school in countryside. Run by his elder female cousin, the protagonist visited the school "Shooting Star Garden". However, it was a girls-only dormitory. A brave girl who aims to get into university while fighting a disease, A girl who was hurt from failing to appear for her exams, An old fashioned girl who swings a sword, A sexy elder cousin and a friendly younger cousin. What will become of his life, living with these various heroines?