The Weiß Kreuz franchise includes two seasons of anime and one OVA series, a light novel, two manga series, and several drama CDs. The four voice actors of the main characters - Koyasu, Hiro Yuuki, Shin-ichiro Miki, Tomokazu Seki - formed a band named "Weiß"; several CDs and singles were released.
Weiß Kreuz (Hepburn: Vaisu Kuroitsu, literally German for "White Cross", written "Weißes Kreuz" or "Weißkreuz" in German) is a series conceptualized by voice actor Takehito Koyasu.