This fanfiction continuation is heavily inspired by ExtremeSManpig, his original story is here: https://www.fanfiction.net/s/13502562/1/One-Final-Promise.

This for those who aren't satisfied with the ending of the manga or haven't move on from the series.

I highly recommend to watch the movie first, then read the manga, reason is, there is a certain scene where the movie portrays it better than the manga, but for the other scenes, the manga is still better.