It was good. Studio Durian and the director Kiyotaka Oshiyama did the manga justice and managed to add some additional material that makes the 75 min runtime feel good enough. Some scenes felt rotoscoped, if so I think it was used well and conveyed the emotion. The voice acting was great. The animation of the 4 panel manga surprised me, but it was a welcome addition. The soundtrack is a gorgeous piano throughout. The emotional moments hit like a truck.