A war between angels and demons has broken out?! Fight back while holding a snowball in your hand!! In the Myten Park, where light snow is swirling, a snowball fight has begun. Underestimating a snowball fight is unacceptable! This is a sacred war fought as a representative sport for both the heavenly realm and the demon realm! As a referee, Zeirel, the older sister of Tenma-senpai, has also descended. Now, Kurumizawa-senpai! Shall we settle this once and for all?