Let's go KAIKIGUMI - S01

Many people are afraid of the supernatural, but one high school student has a unique take. He used to be absolutely terrified and went to extreme lengths to protect himself, but eventually he decided that ghosts and other supernatural phenomena are not real, since they never bothered with such an easy target. Even so, he still takes precautions, just in case he is proven wrong. One evening, the student meets a ghoulish girl named Mechako, who reveals that all supernatural phenomena are controlled by an organization called the Kaiki-gumi. After her father passed away, she inherited control of the organization despite having no talent for instilling fear in humans, which led to a decline in otherworldly phenomena. Refusing to be the last generation that fears ghosts, the student partners up with Mechako, hoping to increase her understanding of fear, even if it means experiencing more fear himself.