Outstanding manga.

Story itself is developed really well. It really drag each other elements like the manga itself themed mountain climber too.

The character... Yes, visible confusion, and self fighting. Within the mountain climbing, in the middle of it, you too not only relying on your mountain climbing ability but also having a conflict within yourself. I only want to say, it's really like finding yourself journey, by facing your inner conflict and then you can be a better version of yourself. The manga can give this feeling really well.

The art? Superb, so realist. The manga artist really done it job well, even though I don't know what is a mountain climbing equipment or mountain peak view, but the art in this manga makes the reader think "My, this is how it feel, to suffocate, to be hard at breathing at high altitude, etc etc".

Yes, if you like realist manga with a story close to realist (It used a real life reference, so I think it's close) and "I think I can go with one more chapter, oh wait, it's already morning" manga. This could be one for you.