Nanase runs a pawnshop in the Kabukicho area of Shinjuku, Tokyo, Japan. He is a genius appraiser able to distinguish fakes from originals. He gets pretty much everything at his pawnshop. When clients come to his shop, Nanase appraises their items and also tries to solve their worries. (Source: MU)

In 2017, Shinjuku Seven was adapted into a live-action TV series.