So I've seen a lot of people be confused about this story, and I was too, but I think the best explanation I could come up with is this - the entire story is Giju's life flashing before his eyes. I believe what happened was Youngdo took Yuju out of the box, and then ran with her, when he was hunted by the Mantis (the old monk) and killed. After this, Guji's adoptive mother blamed herself and her husband for Yuju's death, and proceeded to burn down her house with both of them in it, which is why Guji's adoptive father appeared as a burnt corpse in the chair, cause that's how Guji thought of him after hearing about that. The blonde woman, I believe, is the memory he has of his mother, and is meant to represent his subconscious taking control as he loses his conscious mind and dies, and the bird is meant to represent him taking freedom for the first time in his life. The reason he killed himself at the end is because, at least I think so, Youngdo and Yuju (the only people he cares about) died, so he believes that he either wants to join them (could explain why Youngdo meets with Guji, cause the child version of Guji is the true expression of his subconscious and Youngdo saw him for who he really was and that's why he liked him), or has no reason for living. I can't really explain the purpose of Elvis or the idol lady, but I think their absence probably ties into the fact that it's only from the things Guji has knowledge of, as the latter half of the story is meant to be the "life flashing before his eyes" type thing, which is why it becomes more blue (to symbolize the water under the cliff, I think) and more weird in terms of art
So I've seen a lot of people be confused about this story, and I was too, but I think the best explanation I could come up with is this - the entire story is Giju's life flashing before his eyes. I believe what happened was Youngdo took Yuju out of the box, and then ran with her, when he was hunted by the Mantis (the old monk) and killed. After this, Guji's adoptive mother blamed herself and her husband for Yuju's death, and proceeded to burn down her house with both of them in it, which is why Guji's adoptive father appeared as a burnt corpse in the chair, cause that's how Guji thought of him after hearing about that. The blonde woman, I believe, is the memory he has of his mother, and is meant to represent his subconscious taking control as he loses his conscious mind and dies, and the bird is meant to represent him taking freedom for the first time in his life. The reason he killed himself at the end is because, at least I think so, Youngdo and Yuju (the only people he cares about) died, so he believes that he either wants to join them (could explain why Youngdo meets with Guji, cause the child version of Guji is the true expression of his subconscious and Youngdo saw him for who he really was and that's why he liked him), or has no reason for living. I can't really explain the purpose of Elvis or the idol lady, but I think their absence probably ties into the fact that it's only from the things Guji has knowledge of, as the latter half of the story is meant to be the "life flashing before his eyes" type thing, which is why it becomes more blue (to symbolize the water under the cliff, I think) and more weird in terms of art