A Half-monster's Comprehensive Journey

Demons, ghosts, ghosts and ghosts!
Every time in troubled times, a large number of demons will come out to make trouble.
The reborn teenager found himself a half-demon, and originally thought it was just the world of Inuyasha.
but……
The demon god Baqi Orochi, the nine-tailed fox Yuzaoqian, the Onmyoji and the Hundred Ghosts Night Walk...
The flat mother drink swallows the boy?With her little sister Ibaraki Doji?
Inuyasha shivered for a long time, only to realize that he still had a system?
What, what, the elixir?Will Gang?Dysmenorrhea Granules?
System Jun: As long as you provide the materials, I can synthesize a universe for you! (This story and characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.)…