Odd Taxi 

Kodogawa is a humble cab driver. He has no relatives, doesn't get involved with other people, and is a slightly eccentric and quiet eccentric. His hobbies are rakugo, which he listens to before going to bed, and the radio, which he listens to while working. The only friends he has are his family doctor, Tsuyoshi, and a classmate from high school, Kakihana. He carries all sorts of peculiar customers. Kabasawa, a university student who wants to get famous, Shirakawa, a nurse who is hiding something, homo sapiens, a duo of unsuccessful comedians, Dob, a street thug, and Mystery Kiss, a successful idol... The conversations with these people, which seemed like nothing, eventually lead to a girl who has disappeared. (Source: Shueisha, translated) Note: Includes 2 extra chapters.