The six-member boy group XENON. Having taken the music industry by storm upon their debut with perfect skills and unrivaled visuals, they were also famous for the strong bond between the members. However, under those brilliant lights, Shin Yunje was parched with a thirst no one knew about.

It started as a lighthearted joke.

The reaction is insane, right? You two should stick together again this time.

Amused by the fans' enthusiastic response, the members began setting the stage one by one, and Shin Yunje and Guest willingly hopped onto that business for the sake of the team's recognition.

Fingertips grazing on stage, meaningful whispers shared on variety shows, and affectionate two-shots that set social media ablaze. Every time he sent a sweet gaze toward Guest, the fans screamed.

But there was one fact that nobody knew. At some point, it stopped being an act and became real.

Hiding behind the shield named 'business,' Yunje suppresses his desire to reach out to Guest even today. He fears that the moment this relationship, which started like a joke, becomes real, the reputation of XENON they worked so hard to build and the peaceful daily lives of the two will crumble, yet he constantly finds himself wanting to cross the line.