i just finished it and ia with your comment. i do follow exo and so i thought the characterization was nicely subtle, but maybe too subtle for people who don't "know" them. the ending seemed kind of "oh, that's it?" although i did really like how it was written. but to me it doesn't feel that related to the original except for the theme of leaving and coming back (and the pairing ofc). this isn't a bad thing, just an observation