Yomizuka no Kaii-san
四見塚の怪異さん
A junior high school in a rural area hosts an unusual club known as the Mystery Inspection Club. It consists of two students: one who believes he suffers from Chuunibyou, a condition involving delusions of grandeur or illness, and another who is more level-headed. Their initial investigations began with minor curiosities but gradually attracted more attention. The club's activities take on a slightly eerie tone as they listen in on others' conversations.