Boundless Necromancer Manhwa
Rise of the Limitless Necromancer / Der Aufstieg des grenzenlosen Nekromanten / The Unlimited Necromancer / 最弱ネクロマンサーは召喚制限解除で無双する / 限制解除,我成为无限制亡灵法师

A young man who never believed he could become a hunter is given an unexpected chance to prove himself. The Tower of Trials has selected every suitable candidate on Earth and asks them to choose a difficulty level. The rewards are directly proportional to the difficulty chosen. For him, this opportunity is a special one, opening the door to a path he never thought he could take.