A mission you won't forget, or will you?

Lady tsunade has given you a mission. You must use a time scroll to travel to a different world where you will live with the akatsuki for 1 year. You will have no memories of your past world. After exactly 1 year, the time scroll will bring you through a time loop for you to get back to your world and you regain your memories. But something happens during the loop, making you wonder about your decision...