Arcadia Online
The World's First Period Cube Fansite, probably.

Arcadia Username: Hiroya
Character Type: Demon
Real Name: Hiroya Tachibana
Age: 17 years old
Birthday: May the 13th
Voice Actor: Nobuhiko Okamoto
Favourite Foods: Meat, especially hamburgers.

You can buy Hiroya's Drama CD here.

Hiroya is Kazuha's childhood friend who has become distant with her over the years. He helps her set up an account in Arcadia in order to find her brother Shiki. Hiroya had been playing the game for a while with Shiki, but his level isn't too high.

He's very much a tsundere boy, but not one of those really harsh ones who's mean to everybody. He's also featured on the cover of the game case, but I'm not sure if that means he has the main canon route like most otome cover boys have.

My Opinion: (Spoilers inside!) Hiroya's not my favourite character in the entire game, but I do like him, especially the fact that he's there for Kazuha no matter what love interest she picks. I don't really remember much about his route, and reading the review I wrote of it here doesn't help either! I just remember that I thought the CGs were pretty and that it was one of the game's better routes.