One main theme could be discovery. When characters descend into new situations or worlds, they often discover new things about themselves and the world around them. For example, in many time - travel or parallel world animes, the characters learn a lot about their own capabilities and values.
Sure. 'Your Name' is a great one. It has a very unique story about two people swapping bodies across time and space, which is somewhat related to the idea of descending in a sense of a journey from one state to another. Another one could be 'A Silent Voice' where the main character descends into a journey of self - discovery and redemption after a troubled past.
Often, in anime descending stories, there is a sense of mystery deepening. For example, in 'Made in Abyss', the deeper the characters go into the abyss, the more strange and unknown things they encounter. The setting usually gets more dangerous as well. As in 'The Promised Neverland', once the kids start to descend from their false sense of security, they are in immediate danger from the demons.
Another example is 'The Promised Neverland'. The children start in what they think is a happy orphanage on the surface, but as they discover the truth, they are metaphorically descending into a dark world of being prey for demons. They have to plan their escape and face numerous challenges as they move further from their false 'paradise'.
Descending of the Heavens was not a continuation of the Divine College's Descending of the Heavens. Although both were works of the Divine College series, Descending of the Heavens was a brand new story that had nothing to do with the Divine College's Descending of the Heavens.
The Descent of the Great Army was a manga and novel, not a movie. It was released in 2019 by the Chinese comic company Manke World. The story was set in the era of the arrival of the heavens, and it told the story of a group of soldiers fighting to protect the earth.
One interesting fact is that it likely has unique and spooky storylines. The characters in it might face various supernatural challenges that are different from typical anime.
It might also be related to a storytelling technique where the plot of the stories is constantly going downhill, like in a tragedy. The events in the 'descending stories' could be getting worse and worse for the characters involved, leading to an ultimate downfall.
Well, Anime Planet may offer manga reading options, but the availability can vary. You should check their website to see if the specific manga you want to read is there and if there are any restrictions or requirements for accessing it.