What the young girl rents is not a movie, but a brother, and the wonderful warm feeling of spending time with him. With her parents deceased, and her once kind brother changed… What the girl seeks is the warmth of a family that she once had. Even if it's a rental one.
Brother for Rent is a completed manga by Ichiiro Hako. It blends psychological, drama and tragedy. You can read all 20 available chapters of Brother for Rent online for free on MangaPulse; the newest is Chapter 20, added 2020-12-21. The series is finished, so you can read it from start to end in one go.