Mahouka Koukou no Rettousei: Yoru no Tobari ni Yami wa Hirameku

Sinopse

The story of the spinoff novel follows the Kuroba twins, who are sworn to protect Tatsuya Shiba. They face a new threat when an enemy from a foreign mafia sets eyes on Tatsuya. <br><br> (Source: Anime News Network, edited)