Ikr, Mizuhara seems like an okay guy. I'd much rather ship him and mizuhara but I bet that Mizuhara will turn out to be a creepy fucker because plot device (/TДT)/
I hope the author won't make Mizuhara-san into a creep lol. Because if his role just to make the little brother realize his feeling for Iori, this is already enough(´;ω;`)
Tbh I need him to end up with Mizuhara-san, not his brother but from the cover and title we already know how the end will be