Noo-ah (played by Kwak Dong-yeon) is Woong's rival in art. That's a bit too kindly of a word for it, since Noo-ah has accused Woong of plagiarism. His exact motives are unclear, given that we know Woong didn't commit plagiarism, since the alleged piece is based on an influence that dates back to his high school days, and was witnessed by Yeon-soo. Despite this entire storyline being presented with serious urgency, nothing really comes of it. "Our Beloved Summer" almost immediately segues into the backstory of Ji-woong's longtime friendship with Woong, Our Beloved Summer, Ahn Dong-goo, Choi Wooshik, Kim Da-mi, Kim Sung-cheol, Kim Yoon-jin-I, Kwak Dong-yeon, Lee Joon-hyuk, Lee Na-eun-I, Park Won-sang, Roh Jeong-eui