A Future Where No One Remembers You (2019)

Two boys, James and Tom, promise that if they ever invent time-travel, they will go back to that very time and place to prove it to themselves. Ten years on and the boys have parted ways, pursuing vastly different paths, with James finally inventing the time machine. His journey to the past leads him to reflect on the changes that have come from these ten years and his clutching to the past. Longing for the friendship he once had with Tom and inadvertently meeting his sister who has died between then and now.