The story is just unfortunately not set up for Cain. They haven’t developed the supernatural plot enough for his story to make sense. Jooin doesn’t have a single inkling that Cain was his dog. No memories, dreams, or even a feeling that he used to know him. And trying to develop that now without it feeling rushed would be damn near impossible. I feel like for Cain’s backstory to be this intense, he should be the main character. The author didn’t prioritize developing his story, and instead focused on Jooin and Yahwi, and now the supernatural aspect of this manhwa doesn’t fit into the story anymore. Cain didn’t have to be a cruch or a plot tool for further development of Jooin and Yahwi’s relationship, but because so much time has been wasted on the main couple, that’s what he’s become.
The story is just unfortunately not set up for Cain. They haven’t developed the supernatural plot enough for his story to make sense. Jooin doesn’t have a single inkling that Cain was his dog. No memories, dreams, or even a feeling that he used to know him. And trying to develop that now without it feeling rushed would be damn near impossible. I feel like for Cain’s backstory to be this intense, he should be the main character. The author didn’t prioritize developing his story, and instead focused on Jooin and Yahwi, and now the supernatural aspect of this manhwa doesn’t fit into the story anymore. Cain didn’t have to be a cruch or a plot tool for further development of Jooin and Yahwi’s relationship, but because so much time has been wasted on the main couple, that’s what he’s become.