Ongoing
S class Raw
S수업
Sang-cheol has just returned to school after being discharged from the military. He tries to win over freshman queen Yeono, but... “By any chance, is this your first time as a senior?” Sang-cheol, a virgin man with hurt pride, begs Hee-su to teach him techniques, and that's how a secret and special lesson begins! Hee-su and Sang-cheol's sex class. Indeed, the end is... ?