The Demon King Is Possessed, but the Price Is That the Body Disappears

Lin Zhun, the president of the Science Fiction Club, firmly believes in the existence of aliens and kills monsters who don't believe in them. Until he was possessed by the Demon King, a body part would randomly disappear every time he used up his powers - his right hand, left hand, or even more embarrassing places. And his partner is the only monster hunter transfer student in the school who doesn't believe in aliens.