Since y'all already know about the spoilers from below, I'll answer a question: If Yugyeol is Uju-hyung, why did Junmin's imprinting rejected him?
Some would answer, because he's not yet the Yugyeol he imprinted on. But actually, it's much more than that.
Junmin is an S Class Mental Esper, his mental capabilities are so advanced and strong because of this. Remember how their matching rate is 92%? It's because even though he hasn't imprinted on Yugyeol yet, his body already recognizes that Yugyeol is his imprinted guide even from their young age. It's actually more like his soul recognizes him.
But then here comes the tricky part, remember how they theorized that Uju-hyung is just Junmin's imagination? It's because of the how powerful he is as a mental esper. For this very reason, his mind actually protected Junmin and made it a priority for him to find his imprinted guide. Thus, his mind and his abilities blocked out any other possibilities of Uju-hyung being someone else aside from the one that Junmin knows. Their matching rate is so high because they are literally imprinted by soul, but Junmin's mental capabilities made it so his body will reject guiding from any other guides. Thus, causing Junmin to not know that he already met his imprinted guide, just.. a younger version of him.
This is also proven on how much he feels a sense of attraction towards Yugyeol. His mind may not recognize Yugyeol, his body and soul does.










Happy wants that cookie so badd