The most memorable part of this show is definitely the amazing OST. It kills every time it plays. A lot of the criticism of this show was about the realism of their running, whether this is a feat that's even possible, about how the difficulty of actually reaching the top is realistic. I find it weird they'd find realism for anime so important when 99.9% of anime is about the chance of a miracle. Even anime based upon irl reference choose to play on their miracles heavily.