beta
The hyung who made love to Jinsung did all of the things that nighttime Yura would never do ( such as ask for consent, be gentle etc. ) however, he also knows all of Jinsung's sensitive spots ( which daytime Yura should not know because this is the frst time that he has gone physical with Jinsung ).
With the really erotic threesome dream lol and Jinsung feeling that something is off, I strongly believe that the two hyungs are merging. Jinsung did tell Yura that he'll love his hyung no matter how good or a bad person he might be.