The Dies irae ～Interview with Kaziklu Becy～ visual novel website updated today with seiyuu information, naming Kiiyan as both the main character, Wilhem Erhenberg and the singer of the game’s OP, Der Vampir. He joins Okiayu Ryoutarou, Suwabe Junichi, Toriumi Kousuke, Yasumoto Hiroki and others.
The game seems to be a spinoff of the Dies Irae bishoujo visual novel, sharing the same alternate history involving nazis and vampires.
It’s for Windows only and can be purchased for 4500 yen on 3/25/16.
You can enter to win Kiiyan’s autograph by using one of the official game banners, linking back to the site, following the twitter account and submitting a form on the site with a link to your site.