One key element is definitely Ymir's emergence from the chaos of Ginnungagap. Then there's the significance of his body being used to form the world. His bones for mountains, his flesh for land, all these are important elements that show how the Norse believed the world was created from this one giant being. It also implies a certain hierarchy in the cosmos as the later - arriving gods were the ones who shaped the world from Ymir.
Prince Li Chengqian did not die in the series. In the 23rd episode of the TV series " Celebrating Years," Prince Li Chengqian was kidnapped by Qi Heng's henchmen, but was finally rescued in time by Fan Xian and others. Therefore, Crown Prince Li Chengqian did not die in any of the episodes.
One common theme is friendship. Many fanfictions focus on how Ymir and Sasha form a strong bond through shared experiences. Another theme is growth. They often grow as individuals while also growing closer to each other.
The key elements in Ymir's back story include her emergence from the primordial state, which was a time of nothingness and potential. Her physical body being the raw material for the creation of the world, like the sky, the earth, and the seas. And finally, the act of the gods overpowering her, which is a significant part of the power dynamic in Norse mythology.
One possible fanfiction could be about their adventures together within the walls. Maybe they discover a hidden passage that could potentially change the fate of the Survey Corps. They might face Titans together and in the process, their bond deepens as they rely on each other's skills and instincts.
Well, Ymir was born from the void in Norse lore. Ymir's body was used to create the world as we know it in the mythology. For example, the mountains were made from her bones, the seas from her blood. Her back story is crucial as it sets the foundation for the entire Norse cosmological view.