Knight: A Fangire's Simple Life of Picking Up Attributes

Transmigrating into the Kamen Rider world as a member of the Fangire clan, the protagonist awakens a mysterious talent that sets him apart. Appointed as the new butler of Castle Doran, he navigates daily life with romantic interludes within its ancient halls, while also slipping into other worlds to seize unexpected opportunities and leftover gains as a carefree opportunist. For this Fangire, such a leisurely and uncomplicated existence is simply the way of life.