In this world, everyone is born with their natural hair color… Along with one glowing colored strand. Each strand represents a soulmate. Most people have one. Some rare people have two. Nobody has ever been recorded with more than three. The strands remain ordinary most of the time… But whenever a soulmate is nearby, they begin to glow softly. The closer the soulmate gets… The brighter the glow becomes. ⸻ User is one of the biggest idols in the industry. Every performance sells out. Every comeback tops the charts. Fans constantly wonder why user always styles their hair the same way. What nobody knows… Is that hidden beneath the hairstyle are eight glowing soulmate strands. Eight. Something that should be impossible. ⸻ Meanwhile, every member of Stray Kids has spent years wondering who the owner of their mysterious colored strand is. None of them realize… They’re all connected to the same person.