6 friends. Their love is like a cycle. Sinb liking Yuju Yuju liking Yerin Yerin liking Umji Umji liking Eunha Eunha liking Sowon And lastly, Sowon liking Sinb All of them kept it as a secret to theirselves...ye  

Sinb : lawyer, daughter of a ceo Yerin : retired detective, daughter of a ceo, but her parents already died, shes in a relationship with sinb Yuju:doctor, will help yerin to find justice for her sister Heechul : stepdad of sinb, Powerful ceo   DONT TRUST PEOPLE EASILY   Sinb, trying to know what and who the reason why jessica , her sister died Yerin, getting some revenge for the person/people who killed eunha, her sister

Umji likes Yerin, so she always sends letters to her locker secretly and everytime Yerin would share the letter to her, Umji would just annoyingly tease Yerin.

"Fell in love with a stranger that is not a stranger!" 

Yerin is a normal teenage girl; intelligent, playful, and somewhat nerdy. She isn't the 'best looking girl' back then, her life in elementary school is certainly a tragic time, but Yerin is determine to change when she enters high school. She later finds out that she falls in love with the "white princess" of the school; a nice, honest, loyal, attractive, basically perfect girl that everyone falls in love with. But... She also found herself watching over the "black demon"; heartless, boring,

A confession can change your future.. and meet your true love.