Bae Song U is in a one-sided love with his longtime friend, Kim Sang Jin. Living his life hiding his feelings, one day Bae Song U finds a suspicious book in his house, and written inside is Kim Sang Jin's life story. Bae Song U is just a passing extra...?! As he tries to ignore the book, Bae Song U soon realises that everything is going as written... Original Webcomic Official English Translation