What is the relationship between Riot Grasper manga and Rock?

There's usually no direct link. Dragon Riot manga has its own plot and characters, and Rock could just be mentioned randomly or have no significant association.

I don't know the exact plot of 'riot grasper light novel' as I haven't read it.

I'm sorry, I'm not very familiar with a specific 'riot grasper light novel'. There are so many light novels out there, you might try searching on some popular light novel platforms or asking in light novel fan communities.

Riot Games may draw inspiration from comics for their game designs or character concepts, but they aren't directly involved in creating comics.

It's hard to say exactly. It could be that Rock is a character in Sun Ken Rock manga, or there might be a musical influence related to the term 'Rock' in the context of the manga. But without more details, it's difficult to be definite.

The Mashikaku Rock manga might incorporate elements of rock music, like characters inspired by rock musicians or storylines related to the rock scene.

Well, it could be that the 'rock' aspect refers to a style or theme incorporated into the Black Rock Shooter manga. Maybe it influences the characters, settings, or storylines. But without more context, it's hard to say for sure.

Not much. Manga Rock was a platform for accessing various manga, but its use might not have been legal for all content, including 'Oreshura'.

Not much. They are likely two separate and distinct manga with no direct connection.

Not much. Kochikame manga is an independent comic series and Manga Rock is just a platform that may offer access to it illegally.