What is the relationship between 'blue friend' and manga rock?

The blue rock might be a key element or character in the soccer manga, adding some special twist to the story.

Well, usually 'blue dragon manga' and 'rock' don't have an obvious relationship. Maybe it's some sort of creative concept or a very specific reference in a unique story, but without more context, it's hard to say.

Well, it's hard to say. 'Scratch' could refer to a mark or damage, 'blue' is a color, 'manga' is a form of comic, and 'rock' could be a type of music or a solid object. Maybe they are just mentioned together without a specific relationship.

I'm not sure. Maybe they have no direct connection at all.

I'm not really sure. Maybe there's no direct connection at all.

I'm not sure exactly. Maybe they have no direct connection.

Well, 'Blue Period' is an independent manga series. Manga Rock was known for illegally providing access to various mangas, but that doesn't mean it has any specific tie-up with 'Blue Period'.

I'm not sure. Maybe there's no direct connection. It could just be two separate entities.

Not much, really. The Magmel of the Sea Blue manga has its own unique story and themes, and rock doesn't have a direct connection to it.

I'm not sure. Maybe there's no direct connection.