Nana to Kaoru: Black Label

Nana to Kaoru Black Label series begins 8 months in the future of the parent version with Nana and Kaoru in the summer of their final year of high school
Nana is a normal teenage girl in her last year of high school getting ready for college admissions tests during her summer vacation with the exception of one thing She takes breathers with her childhood friend Kaoru An encounter with Tachibana a worker she knows at an SM shop brings Nana further into the SM world as she learns what it means to be master and slave