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Clase S Insegnami tu!
También conocida como: Lesson S · Clases S · Cours S · Insegnami tu! · Lições Secretas · S Class · S Класс · S-Class · Sクラス · S수업 · 秘密のSレッスン · S Sueop
Sang-chul has just returned from the army. He's trying to win over the freshman queen, Yeon-oh, but... With his pride wounded, Sang-chul asks Hee-soo to teach him the techniques, and so begins a secret and special class! Hee-soo and Sang-chul's sex class. Will it ever end...?