Witchbound Ascension: The World Will Fear Me

In a world overrun by monsters, men bind with powerful Holy Maidens to gain strength. But when an assassin named Mark Grimm transmigrates into this world, he shocks everyone by choosing a feared witch as his partner. The witch is known as a deadly binding companion who is impossible to train. However, the witch Mark binds with is no ordinary witch. Together, they slowly uncover the hidden truth behind the divine war.