A Dangerous Friend of My Brother summary: My brother's friend Jo Shinwoo, whose face was my taste, was a third-generation chaebol with both looks and abilities... but he was a dangerous man who ruined women's lives with his dirty temper, two broken engagements, and endless scandals . At the wedding of his long-time unrequited love, Jo Shinwoo, who met her soaking wet because even the weather was not cooperating, led her to the guest room with his usual rude attitude, and Jo Shin-woo, who I saw in a dazed state after having a few glasses of wine to kill time ... had a really bewitching face. "Sleep with me, oppa." The next day, when we shared our eyes in bed... Wait, am I waking up in the same bed as my brother's friend?!?! "Lee Yuju, I'm really curious." "The reason you ate me and ran away." My brother's old friend... and a one-night stand with a bad man who ruins women's lives. Eat me and run away, me?!