I feel like it's going to end with the male twin sacrificing himself for the female twin. I really can't see it going the other way. He's gonna be like "you were always my sun" because she's so bright and cheerful and free-spirited, while he was always so sickly and stuck inside in the dark. Then she is all upset but becomes more serious, taking on the burden of being a good ruler in place of her brother so that his sacrifice isn't in vain.
I feel like it's going to end with the male twin sacrificing himself for the female twin. I really can't see it going the other way. He's gonna be like "you were always my sun" because she's so bright and cheerful and free-spirited, while he was always so sickly and stuck inside in the dark. Then she is all upset but becomes more serious, taking on the burden of being a good ruler in place of her brother so that his sacrifice isn't in vain.