Muhyo & Roji's Bureau of Supernatural Investigation

Kenji visits a spooky shrine on the outskirts of town to prove to his friends that there's no such thing as ghosts... and he rips off a talisman that had been stuck on the shrine door. Later, Kenji brings his sister figure Nana to the Bureau, and Muhyo tells Nana that all the pictures she's shown him are ghost photos. Nana is enraged by his claim, but then...