This is why I kinda hate shoujos. Always, always, even if the main guy is a jerk and the second guy is much more suitable for the heroine, she will end up with the male lead.
Hiro is cute though, but my love for Daiki grew and at this point I would say that him and Mao are my OTP.
Same goes with Mamura and Suzume.
Or Kikuchi and Futaba
(and the list goes on)