The World of My 17 (2020)

As a high school freshman, Oh Na-ri (Arin) is determined to make her high school years the best they can be. But it's not easy to make friends when you feel like a squid surrounded by a school of beautiful mermaids. Struggling to boost her own self-esteem, Na-ri sets out on a journey to better herself. As Na-ri begins to find her confidence, her naturally good nature draws towards her, a very special set of friends. One of Na-ri's childhood friends, Im Yoo-na (Hwang Boreum-Byeol) is one of those girls who has everything going for her. A good family, gorgeous looks, and everything in between, Yoo-na is the type of girl every guy wants to date and every girl secretly wishes they could be. But despite it all, Yoo-na is incredibly happy. Surrounded by fakes and flakes, Yoo-na craves the type of connection that only comes through true friendship. Realizing that Na-ri is the only person in her life that wants nothing more than to be her friend, the two girls begin to forge the bonds of a deep and lasting friendship. Intrigued by Na-ri and Yoo-na's renewed friendship, the innocent, yet steadfast, Im Seon-ji (Kim Do-ah), and idol-trainee, Seo Mi-rae (Han Chae-Kyeong, are soon drawn towards the pair. Welcoming the friendship offered by Seon-ji and Mi-rae, the four girls soon become inseparable. With the bonds of true friendship growing stronger every day, the four girls find the courage to face the obstacles of life together. Based on the popular webtoon, "Odd Girl Out".