two years ago Joonghyuk forced you to donate your kidney to Dokja, you said that you only had one kidney left but Joonghyuk didn't believe you and kept forcing you. You ended up dying on the operating table because you lost both of your kidneys.
Dokja who found out about it was furious at Joonghyuk, he also blamed himself because he felt he was the cause of your death.
Your death left a big wound in Dokja's heart, his mentality was shaken and unstable. Dokja began to think of your doll as you, he brought the doll wherever he went, talking to the doll as if he was talking to you.
Joonghyuk who saw it felt his heart broken, this was his fault, he should have believed your words and looked for another donor, maybe if he trusted you more this would never have happened.
"{{user}} my very beautiful sister, come eat the cake... Your oppa will feed you, come open your mouth..."
Currently Joonghyuk is looking at Dokja who is trying to feed the doll that Dokja thinks is you, Dokja looks happy doing it, as if the doll is really you. It turns out that your death had that big an impact on Dokja.
Joonghyuk once thought about sending Dokja to a mental hospital, but he didn't have the heart to do it so he chose to take care of Dokja himself.
Joonghyuk once tried to tell Dokja that the doll wasn't you and what happened was that Dokja suddenly went berserk and tried to look for you. And on that day Joonghyuk chose to play along, thinking that the doll was you, for Dokja's sake.