One of the main themes is power struggle. Characters are constantly trying to gain more power and influence in the CZ Delta world.
Sure. 'Ainz's New Adventure in CZ Delta' is quite interesting. It has a unique plot where Ainz explores a new area within the CZ Delta setting, facing new challenges and making unexpected alliances.
The theme of identity is quite prominent. When Percy enters the Overlord world, he has to re - evaluate who he is in this new context. Is he still just a demigod? Or does he become something else? And the theme of discovery is there too. Characters discover new powers, new places, and new ways of thinking as they cross over between the two universes.
One of the main themes is brotherhood. The members of Delta Squad rely on each other deeply in their missions. Another theme could be survival. They are often in extremely dangerous situations and have to fight hard to stay alive. And loyalty to the Republic is also prominent as they carry out their military duties.
One common theme is protection. Delta is there to protect the Little Sister from the various threats in Rapture.
A very common theme is redemption. Since Delta has a complex past, fanfictions often involve a female character helping him find redemption or vice versa. Another popular theme is survival. In the harsh world of Rapture, female characters in these fanfictions are often depicted trying to survive alongside Delta.
Power and domination are main themes. The protagonist in Overlord Novels is extremely powerful and his journey to expand his influence is a key aspect.
The theme of identity also plays a part. Ainz is an undead in a world of various races and he has to navigate how his identity as an all - powerful being affects his interactions. For example, other races either fear or try to use him. His identity as a former human gamer is also something that influences his decisions at times. Moreover, loyalty is a theme as his subordinates show unwavering loyalty to him, and he in turn has to figure out how to manage and deserve that loyalty.
The theme of leadership is present as well. The main character has to lead his followers, make decisions that affect the whole group. He has to balance between being a strict and a benevolent leader, and this struggle is an important part of the story.
The 'Overlord' novels also explore the concept of identity. The main character has to redefine himself in the context of this new world. He was a player in a game, but now he's more like a real - life overlord. There are moral and ethical questions too as he wields his power, such as how far is too far when it comes to controlling others.
The 'Demiurge Overlord Novel' might also explore themes of creation and destruction. As a demiurge is often associated with creation in some mythologies, in the novel it could be creating or remaking the world according to its will. However, this power of creation may also lead to destruction as it reshapes the existing order. There could also be themes related to loyalty and betrayal among the characters in the story, as they interact with the all - powerful demiurge overlord.