There’s a special notebook which allows you to have sex with any women if you see their panties. If the notebook is real, the one who obtains it can seduce any women that he wants...! (Source: TOPTOON+) 
Note: Chapter count includes an epilogue.

When Dae-Ho was a child his parents were killed in a tragic accident. Afterwards, he was taken in by his late father’s friend Mr.Cha and was raised with love and care. Now, at age 20, Mrs. Cha realizes that Dae-Ho hasn’t been properly taught about growing up into a man. He keeps having wet dreams and she feels he needs someone to show him how to relieve his urges. She takes it upon herself to show him how it’s done... (Source: TOPTOON+)

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