-Male Lead as an inmate.
-Tries to expose truth(Different situation)
-Need to survive from the gangs and Warden.
-The Rich leader in prison plot

Plus, there are 1-2 cast from the movie in the drama.

Similar points:
*The FL is from other planet to Earth
*lnterspecies Romance
*Supernatural Powers
*Hidden Identity

Similar Points:
*It has a mysterious things...
*Spread throughout the place...
*Many people dies....