I have no definite idea. It could be that the characters are fans of rock music and that influences their tennis journey, or perhaps the art style has a rock-inspired aesthetic. But that's all just speculation without more information.
I think it's possible that 'Rock' refers to a music element or theme related to the 'Hoshiai no Sora' manga, but it's hard to say for sure without more context. Maybe it's just a coincidental mention.
You might try looking on some dedicated manga raw websites, but be careful as some of them might not be legal or reliable.
I have no concrete idea. It's possible that Aki Sora is popular on Manga Rock or that they have some kind of collaboration, but I can't say for sure.
I think they might not have a direct connection. Manga Rock is a platform for various manga, while Ahiru no Sora is a specific manga. Maybe Ahiru no Sora can be found on Manga Rock, but that's not always guaranteed.
There aren't many major differences. The anime mostly sticks to the manga's plot and characters.
I'm not sure. Maybe Manga Rock hosted or distributed 'Ahiru no Sora' manga, but that could be against the law if it was unauthorized.
I think it might be that the Sora no Otoshimono manga has some sort of connection to a rock music theme or maybe it's related to a character named Rock. But that's just a guess without further information.
There's no official connection between Shin Prince of Tennis manga and Manga Rock. Manga Rock was known for unauthorized distribution of manga content.
Aki Sora manga on Rock attracts people with its unique storyline and art style. It offers a fresh perspective on certain themes.
I'm not sure exactly. Maybe it's a manga with a rock theme or has some connection to the rock music scene.