Spacewalking With You Volume 4

On the night of the summer festival, Uno runs off after getting in a fight with his sister, Satsuki. As Kobayashi pitches in to help look for him, Satsuki airs the question that's been eating away at her: Why does Kobayashi hang out with Uno? Kobayashi wants to explain how much he's changed since meeting Uno, but the words just aren't coming… Can he win Satsuki over, or will she put an end to his and Uno's budding friendship?