Spacewalking With You 2 by Inuhiko Doronoda

One's an apathetic loner, one has his head in the stars...and they have no idea how much they need each other. The coming-of-age buddy comedy manga that became a surprise hit in Japan.

Named top shonen series of the year in the Kono Manga Ga Sugoi Japanese industry poll!

Uno and Kobayashi have joined the Astronomy Club, and Kobayashi begins to discover the joys of stargazing for the first time. But if Kobayashi wants to keep attending, he’ll need to conquer his disgust for studying and pass his final exams for once. Will the support of Uno and his coworkers be enough to keep Kobayashi from spending summer break in school? And can Uno learn to have fun without wearing himself out?