A long time friend of Usami Akihiko's, Hiroki is an associate professor at the college Takahashi Misaki studies in. He may seem very intimidating because of his bad temper, especially to his students who call him "Demon Kamijou", but is actually quite shy and gets flustered easily. He is a bit of a loner, but is currently in a relationship with Kusama Nowaki.
A perfect tsundere character! And it looks like this may have been taken in the same place as Nowaki's shoot. Thanks to Hime-sama for sending this!