Blue Box or other manga recommendations?

I was never particularly into manga growing up, but I got into it once I started learning Japanese a few years ago. Now I’m looking for more manga series recommendations. I passed N2 last year, but I don’t particularly mind the level of the mangas – just looking for interesting reads.

So far I’m reading and really into: Haikyu!! (nearly done with the series), Umimachi Diary (nearly done too), Slam Dunk and Aria the Masterpiece.

I’m considering Blue Box, because I’ve been enjoying the episodes I’ve watched of the anime. Would you recommend the manga?

I’ve also thought about Amanchu (can’t get enough Kozue Amano), Yokohama Kaidashi Kikou (if I can ever find a physical copy), Dragon Ball (I enjoyed watching the anime on TV when I was a child) or continuing Yotsuba (the first two volumes were an easy comforting read).

But I’m also open to other series. I like slice of life, sports, action, sci-fi, romance… Not very keen on something historical (at least before 20th century) and not keen on series that have over 50 volumes. I’d also be interested in some musical/band manga, have never read any. Thank you!