In the world of magical girls, Matsuyuki Sakura, a boy with a feminine appearance, transforms into a magical girl to combat a malevolent virus within a vast server. Recruited by the esteemed magical girl Shiori Himuro, known as the 'Gospel of Darkness,' Matsuyuki's true gender is exposed, leading to a tumultuous encounter. As they face off against the virus's origin, the formidable 'Queen,' Matsuyuki relies on virtual spectators' support while concealing his identity to preserve his social standing. This whimsical tale blends magical battles with comedy as a boy fights alongside a heroine, juggling the challenges of both protecting the world and safeguarding his secret.