Imageepoch and Nico Nico have teamed up for a special April 1 surprise. Puchitto Rock Shooter, an app from Imageepoch that runs on Nico Nico Douga's new app service, will from this day forward be known as "Hiroyuki Rock Shooter."
Puchitto Rock Shooter is based off Black Rock Shooter. It's not to be confused with the upcoming PSP adaptation of the franchise.
As for Hiroyuki... he's probably richer than you are.
I'm not sure if Imageepoch arranged all these images just for an April 1 press release or if they actually modified the game (and no, I'm totally not going to check). You can find out yourself by visiting the app page and playing for yourself.