[Eichan]

Originally Posted by ellifeedn

Spoiler:

I would also speculate that he is Hayate's brother. Problem is, remember when Hayate was looking for some sort of finishing move and found that book by Himegami? Wouldn't he have said something if he recognized the name? Just my 2 cents there.

Spoiler:

"Himegami" may just be an assumed name. Or Hayate could be thinking it's a different Himegami than his brother.