My Friend's Impure Younger BrotherNewEm Trai Của Bạn Tôi Không Còn Trong Sáng; Impure Friend's Younger Brother; The Naughty Intentions of My Friend's Brother; Порочный младший брат друга; น้องชายของเพื่อนคิดไม่ซื่อ; 불순한 친구 동생

**Original Webtoon:** [Bomtoon](https://www.bomtoon.com/detail/feeey39), [Lezhin](https://www.lezhin.com/ko/comic/bulsunhae) “Isn’t a younger guy better than an old man? I can do it several times a day.” I wasn’t exactly in a position to lecture him like some proper conservative girl and ask what kind of outrageous nonsense a younger guy was spouting. “Take responsibility for sleeping with me. Ever since then, I haven’t been able to stop thinking about you. My erection won’t go down.” That boy I had cherished almost like my own younger brother, “I’m hard right now too.” Nam Doha, who used to be as cute and adorable as a doll when he was little, “Sleep with me, noona.” The moment he turned twenty, I ended up taking his virginity. ‘I’m going crazy, Doyoon… What am I supposed to do?’ I used to tell Doyoon every little detail of my worries, especially my love problems, and ask him for advice. There were no secrets between us. But for the first time, I ended up keeping a secret from Nam Doyoon. ‘Doyoon. I slept with your brother.’