In Overlord Volume 15, there are many events. One of the main ones could be the further expansion of Ainz's rule and his interactions with different races. However, without reading it in detail recently, this is a general idea.
The volume likely contains developments in the relationships between the various NPCs created by Ainz. Some may be sent on missions, and we get to see how they operate independently. There could also be encounters with new powerful entities. Ainz's attempts to understand the world better and find a way to fully assert his rule are probably a big part of the story. It may also introduce new elements to the overall plot, such as new magical artifacts or ancient secrets that could change the power dynamics in the world of Overlord.
In Overlord Volume 17 Novel, there are likely new challenges for the protagonist. Maybe new foes appear or new alliances are formed. However, without having read it in detail, it's hard to be more specific.
In the Overlord 13 novel, one of the main events is the continued exploration of the New World by Ainz and his subordinates. They face various challenges and interactions with different races. For example, they might encounter new magical creatures or deal with political situations among the native species. Another aspect could be the development of Ainz's power and his plans for the future of his territory in the New World.
In the Overlord 14 novel, one of the main events is the further exploration of the New World by Ainz and his minions. They face new challenges and encounter different races. There are also political intrigues among the various factions in the New World.
One main event could be the expansion of Ainz's territory. He might be facing new enemies or forging new alliances. Another could be the development of internal politics among his minions. There may also be some sort of crisis that tests Ainz's leadership skills.
One main feature is its unique world - building. It creates a vivid and detailed fantasy world where the story takes place. The characters are also very distinct, especially the main character. For example, his powers and his role as an overlord in this new world are quite interesting to explore.
The tenth volume of Overlord was the fourth volume of Overlord, which told the story of the battle between the protagonist, Shatia, and the Bone King on the Tarasha Continent. As a demigod, Bone King had extraordinary strength and skills, while Shatiya was a female mage with powerful magic abilities. In the tenth scroll, Bone King and Shatiya had a fierce battle. Bone King used his strength and skills to continuously attack Shatia in an attempt to defeat her. Shatia kept casting magic to control Bone King's power and finally defeated him. In this battle, Shatiya displayed her strength and wisdom, bringing victory to the entire Tarasha Continent.
One of the main plot points is the continued exploration of the new world by Ainz and his subordinates. They face various challenges and interactions with different races. For example, they might encounter new magical creatures or groups with their own agendas. Another point is the development of the power dynamics within the Great Tomb of Nazarick as they expand their influence in this strange new land.
I haven't read it yet, so I'm not sure about the exact main plot points.
In Overlord Volume 2, one of the main plot points is the expansion of Ainz Ooal Gown's territory in the new world. He starts to interact more with the various races and factions. For example, he has encounters with the lizardmen. Another point is the development of his subordinates' characters as they adapt to the new world and their roles under Ainz.
I haven't read Volume 15 in detail yet, but generally, it might continue the story of Ainz Ooal Gown's adventures in the new world. Maybe there are new challenges he has to face, like dealing with more powerful foes or political intrigue in the kingdoms there.