I understand short manga doesn't have much time to flesh out it's content, but you should at least put some thought into it. I don't mind simple works but this feels like the author just wrote a manga about their favorite daydreams without bothering to make the necessary changes. As it stands, Bokutachi no Tabi isn't terrible at its core, but the shell is impressively messy with a ton of plot devices and ridiculous conveniences. If the core was more impressive I could forgive its shortcomings but as it stands, it's just a couple bland characters running away from home for minor reasons and aftersome chance encounters realize they shouldn't give up on their dreams.

In the end, it's hard to find any value in a mediocre story with poor execution. The fact that it lacks redeeming qualities outside of aspects that could've been worse solidifies it's place among manga I wouldn't recommend to anyone ever. It doesn't even fail in any interesting ways.