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Boy-Friend's Rule
También conocida como: Namsachinui Beobchig · 남사친의 법칙 · 男闺蜜准则 · The Law of Being Friends With a Male · Boyfriend's Rule · 純友誼法則 · Namsachin-ui Beobchig · Namsachin-ui Beopchik · Namsachinui Beopchik · 男友達って彼氏になれる?
Ji-Un's first romance ends when her crush, Jae-I, confesses that he likes someone else. To make matters worse, Jae-I mistakenly believes that Ji-Un's crush is his scary-looking best friend, Seo-Hyeon, and tries to help her win him over. Now, Ji-Un must deal with a bigger problem than her unrequited crush, the boy-friend she had never imagined getting close to.