What's the relationship between the 'Hey Class President' manga and Manga Rock?

It's a complex relationship. Sometimes the manga is adapted very closely, while other times there are significant changes.

It's quite interesting. The storyline and characters are engaging.

It's got a unique plot and well-developed characters that draw people in. The romance aspect is often engaging and different from the usual.

There aren't many big differences. The manga and its adaptations mostly stick to the same plot and characters.

I have no idea. That seems like a really odd and specific combination and it's hard to tell what the connection could be.

It does to a large extent. The anime sticks pretty closely to the manga, keeping the main plot and characters intact.

I have no clue. Maybe 'President Priceless Wife' was once available on Manga Rock, or it could just be mentioned in passing with no significant link.

I really don't know. It's possible they have no relation at all, or maybe 'President Cold Wife' was featured on 'Manga Rock' at some point, but I can't be certain without more details.

Yaoi manga and the class president concept in Anime Planet could potentially intersect if the creator decides to give a class president character a yaoi storyline. But this isn't a given and is highly dependent on the manga's theme and direction.

Well, 'hentai manga' refers to a type of adult-oriented manga, while 'hey senpai' is just a greeting. There's really no direct connection between them.