A Lesson for the Arrogant Younger Brother

You are reading A Lesson for the Arrogant Younger Brother manga, one of the most popular manga covering in Adult, Drama, Historical, Manhwa, Mature, Psychological, Smut, Thriller, Yaoi genres, written by Btlz at KaliScan, a top manga site to offering for read manga online free. A Lesson for the Arrogant Younger Brother has 2 translated chapters and translations of other chapters are in progress. Lets enjoy.
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"Since you act like such a naïve simpleton, older brother, I wonder if you even have a cock." The arrogant younger brother, Yeon, always looked down on his older brother, Kangwoo. He would do so with words like "simpleton" or "beast," and so on. However, Kangwoo, who was adopted, would always smile faintly like a scholar and quietly accept Yeon's insults. Then one day, everything changes. "You always treat me like a beast, or rather, a eunuch... aren't you curious what that beast is like at night?" "..." "I'll show you my cock." To Yeon's usual provocation, Kangwoo finally begins to react.