Han Hyo-Joo and her engineering friends, including her seatmate Jo In-Sung, share a tight bond. As Hyo-Joo and In-Sung grow closer, their friendship evolves into something more, though neither acknowledges it.
This story is based on the author's lovelife.. and probably the last #JoJoo story from the author.
As an idol, Sana is used to intense rehearsals and her overprotective brother Minho's meddling-especially his ridiculous "no dating until thirty" rule. But when she starts getting closer to Changbin, unspoken feelings grow, and balancing music, love, and Minho's watchful eye becomes more complicated than she ever expected.