tvN D STUDIO’s original web drama “The World of My 17” has released a new teaser for Season 2! The first season of “The World of My 17” starred Oh My Girl‘s Arin, Kwon Hyun Bin, Hwang Bo Reum Byeol, Han Chae Kyung, FANATICS’ Do Ah, and Ryeo Woon in a realistic story about the friendship