It's an amazing but very sad story. Super quick and all but for a first timer like me (where I didn't expect 'that') it's super heartbreaking and I really regret watching it. I wish I had never watched it like ever. It's all about regret I think, in and out of the story. The regret of what we missed out in life, and the regret of not finding the courage before it's too late. I would highly recommend this if you're looking for something sad and depressing to watch but I wouldn't recommend it ever if you're looking for some bright spots in life. :(