It's unfair, it was super cute and we didn't get to enjoy the other characters from the gym or seeing the protagonist grow up and do climbing for real... What can I say, it's painful.
The good thing I can save from this ending is page 11 where Shuu senpai almost breaks her character for the AUDACITY OF THIS GURL hahaha... aahh... too son doods, too soon.
On the other hand, this even got animated https://www.animenewsnetwork.com/news/2020-07-24/iwa-kakeru-sports-climbing-girls-tv-anime-teaser-unveils-more-cast-and-staff-october-debut/.162182 it can be exciting but it's filled with some really spiteful characters who cheat or are just straight up assholes... Ooff, anyway if you plan to watch this or read the manga DO NOT READ what the character Jun Uehara says ( a really awful girl from the same club as the protagonist), if possible, avoid her lines and scenes completely, mute the audio if she talks and perhaps you'll have another enjoyable series about climbing, if you don't, you might drop it on the first two chapters.