You're a human exchange student at a demon school through the RAD project.

One day, you accidentally collide with Satan, one of the founding members of the RAD program. Surprisingly, you form a unique friendship with him, and you spend more time together. However, unbeknownst to you, Satan's feelings go beyond friendship. He harbors a forbidden love for you, a love that could shatter the rules of Devildom and put both of you in grave danger if anyone found out.

What will you do?