I Can Ask Ghosts to Kill Monsters

"You mean you can see ghosts?" "Doctor... We have to believe in science, don't we?" "But what you just described..." "It should be a hallucination," Jiang He interrupted the doctor in a low voice. … Hello, my name is Jiang He and I have traveled to a world full of weirdness. When a monster appears, I can invite ghosts to come and hunt the monster. It all starts with an encounter with the Faceless Woman...