[Machine Translation] The weakest, most incompetent boy becomes unstoppable alongside a beautiful half-human girl!! Kale has awakened to the ability to become the Strongest Servant" one who can adapt to any half-human s abilities and, despite being a Servant," wield power surpassing even that of his Master." Until then, he had been a failure and a target of bullying at school, but his life begins to change when he becomes a Servant of the vampire Krena . Just then, Fana, a servant of the vampire royal family, informs him that Krena s mother is in critical condition. To escort Krena to the vampire territory, Kale decides to set out on a journey, joined by Aina, a tiger-shapeshifter girl!! A school-based supernatural fantasy where the weakest transforms into the strongest!