as always whenever there's a anime adaptation to LA, the ending always changed. tbh i prefer the anime ver for the ending. at least hase didn't suffer from the pain that happened to him haha. but overall it's still worth to watch if you didn't watch the anime version first.
oke, let's talk about the good part. -

(this is completely spoiler, please do not read that if you don't want to get spoiled!!)

so, sorry for the bad impression first. acctualy i still prefer the anime version. but, this adaptation still good though. the story begin with hase find kaori's student identity and sniffing her id but kaori find it out when hase sniffing her id. then after that hase started to get more closer with her. time to time they begin doing the same thing as the anime and suddenly her ex classmates and also her "crush" meet at the "hanabi' festival. the next day her past started to join the same class as kaori after moving from hokkaido to her city. after that he begin to get closer to her to "revenge" but after knowing she's have short memory, he started to get closer with her again. kaori begins to remember her past after her ex best friend apologizing about what happened with her memory, she's started to remember the rest of her past but her memory still forgetting about what happened recently and of course, her memories with hase. hase started to give up and burn that note book. after the graduation ceremonial, kaori get announcement from the library council and ask the book that hase borrow from the library. after that she's finds out that there is hase's drawing in that book and suddenly she's remembered what happened with hase and her. then kaori stated to looking for hase and they met for the last time at that school and kaori ask hase to be her friend.

in conclusion.
the story still in the same direction as the adaptation source. it's still nice to know the other "alternative" endings. i would say the one is a sad ending but they pretty much nailed it! for some people, this story way way related (the same as me) and it's a good film too. I'm glad that they still use "kanade" as the ending song, and it's way way more fit to the story! good job overall.