"I don't trust Cain one bit. He seems to be dragging Abel into a sort of master plan with ...

"I don't trust Cain one bit. He seems to be dragging Abel into a sort of master plan with Yeonli.
If he wanted Yeonli to be happy, he had all her childhood, her adolescence and her adulthood to make sure she was not abused by the wrong family, abused by Lee Power, r/ped by that producer. Yet, rather than protecting her, he lead her into situations where she was slowly being destroyed and made dependent on him. He manipulated Cheonmyeong to give his life up for Yeonli, though he was her only support, and though Yeonli WANTED to die and tried killing herself in the past. As well, why was Yeonli's right-hand man able to see Cain back when both Yeonli and her right-hand man were in that orphanage. Cain admitted demons are not supposed to make deals with children. But to see demons at large, you needed to make a deal with one. Which implies that right-hand man made a deal with a demon as a child. And the only demon we've seen making deals with children is ... Cain.
Cain was the main impediment to Yeonli ever finding actual happiness. He dragged her through pain and suffering by closing all the exit doors behind her whenever one opened. We saw what he could do, we saw him witnessing her being r/ped and we saw him turning away. And now he speaks of her finding her happiness after having been r/ped multiple times by multiple men, being beaten to death, having lost Cheonmyeong and Cain definitely removing himself from her, but giving her his freakin' core and what makes him a demon, to eat. And leaving her behind for Abel to find and in the presence of her right-hand man who has been implicated in her torture.
As well, he says he cannot leave his brother behind, he cannot stop loving him, bla bla bla. But then, he "kills" himself, effectively leaving Abel behind ... Without telling him anything, but making sure Abel believes Yeonli is the source of all his suffering. Yeonli believes Cain abandoned her multiple times and let her suffer because of Abel. Abel believes Cain abandoned him and dragged him into this difficult situation with the Queen of Hell because of Yeonli.
Sorry, Cain, I don't believe it, buddy.".