S no Kaikoroku Completed 
4.24
Author: OGURA Akane
Natsukawa gets slowly swept into a dangerous S&M relationship with his girlfriend Sakurai.
Caution to under-aged viewers: The series S no Kaikoroku contain themes or scenes that may not be suitable for very young readers thus is blocked for their protection. If you are 18 and above, Please click here to continue reading.
