A Secret Lesson With My Younger Sister

A Secret Lesson With My Younger Sister Manhwa, first published in 2024, is also known as 여동생이랑 비밀 레슨 / Clases Secretas con mi hermanita / Secret Lessons With My Younger Sister. Written by Alien with artwork by Alien, it belongs to the Drama, Mature, Romance genre and offers both visual and emotional appeal.

“I heard you’re really good at sex.” Jinyoung, known among his friends as “Sex Professor,” is actually inexperienced and as single as could be.

However, when he’s questioned by his 20-year-old sister, Bom, Jinyoung pretends to be experienced and lies. After that day… Every night, my sister now comes to my room without our parents knowing. This is a problem.

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