Well i'm just gonna start saying that i'm crying so much in this moment while writing.
It's not just the ending, the whole movie is so full of emotion that you can't help crying all the time, and when i say all the time i really mean it.
It's great really, if you're already feeling a bit sad this is just perfect for you because your emotion will be everywhere and you can't stop crying
Story is good, actors are really great, i really didn't know anything about Yamada but with this i love him!
The it's really a heartwarming and heartbreaking story, i've loved the three brothers, they are so relatable, i loved his friend, his coach
the music is really good too

well let's say you should really give this a try.