Associate Professor Akira Takatsuki's Conjecture, Vol. 1 (manga)

Naoya Fukamachi is a university student whose ability to infallibly detect lies has left him friendless and isolated. When a paper of his piques the interest of his folklore studies professor Akira Takatsuki, a handsome and eccentric man, he soon finds himself dragged into Akira's research. Now, as the assistant in charge of common sense, he must help his professor interpret an array of unexplainable phenomena...