Nightmare Start? I Bring My Own Monster Synthesizer

In this world, monsters are rampant and all life is devastated. Until a profession emerged Monster Tamer Lead everyone to break through the darkness However, 75% of the land on the continent is still occupied by countless monsters. Otherworldly soul Can it change the world? ……………………………… If it's not my brother, I'll go to bed at 8 a. M. Where did you come from? Why are there monsters everywhere? What the hell, a world-destroying monster? Ahhhhhhhh! It turns out it's mine. Then it's okay. Alias: After traveling through time, I thought he was a good-for-nothing male protagonist, but he got the script of Long Aotian: Long Aotian's Development Plan This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.