The Useless Tamer Will Turn Into the Top Unconsciously by My Previous Life Knowledge

Synopsis:

Because of a mishap, the hero Varius passed on and was resurrected. He was stunned to find in this new world, his previous occupation as a Tamer in the past world was recognized as a low class work in this new world. Using his insight from his past life as a premise, he then applied one of a kind buffs to his monsters, reclaiming a definitive power that he once had. With this power in his grasp, he tried to begin his life as a globe-trotter. Nonetheless...