After dik came to heaven dijun asked him about his experience. He blamed dijun saying she was the one who wants to create misunderstanding between dik and ruyeon.
Dijun laughed at dik condition.
Dijun asked: why do you think i want to create misunderstanding between you two. But dik you forget one thing. This was your redemption and we cannot change it.
(In redemption maybe your status, gender or anything change but your personality never changes. Especially when it comes to love you are always fated to be together.)
Dik: I don't know what you are talking about but I am sure about one thing ruyeon can never kill me.
Dijun: who said ruyeon killed you rather he died together with you. My little brother you maynot know but in redemption looks can also be changed.
Dik: what do you mean?
Dijun: I already gave a lots of hint. You are still clueless. Just remember who was the one who was always there for you and cared for you.?
Dik: stop confusing me. So are you telling me that.....
Dijun: Yes he was your big brother.
Dik finally relized sen ruyeon wasn't the real sen ruyeon. All along the real sen ruyeon was his big brother the only person who cared about him.
Dijun planned all of this beforehead. To make him realise he doesn't love ruyeon. If he truly did love him he would have realised the real ruyeon was his own big brother. No matter which form which status and which universe you can always recognise the soul you loved. Dik never realised it. On the other hand ruyeon truly loved dik he never hurt dik. He even wanted to save him unless his hatred towards dik. And this is what love is.