Suterare Zatsuyou Tamer desu ga, Shinra Banshou wo Subetemo Ii desu ka?

Adam, the protagonist, works as both a jack-of-all-trades and a tamer in the prestigious S-rank party “Radius.” Despite being part of such a high-level group, his fellow members treat him harshly. His only true allies are his loyal servant — the Wild Black Dog named Mei Lux Trim — and the kind-hearted saint Monica, the only one among the members who shows him compassion. As the party sets its sights on conquering the S-rank dungeon, “The Great Necropolis of Annihilation,” an unthinkable betrayal is secretly brewing within the group… Thus begins Adam’s rise — from being mistreated to becoming the King who rules all creation, setting out on a grand adventure alongside a heroine of the strongest dragon race! A highly anticipated Taming Fantasy where one man commands all!

https://www.cmoa.jp/title/355040/