It's extremely dangerous. Such free online reading sources are not regulated. They could expose your device to viruses, spyware, or phishing attacks. Moreover, by using these illegal sources, you are also contributing to the piracy problem which is unfair to the authors and publishers of the 'Overlord' light novel.
There's no official word on when Overlord volume 17 of the light novel will be released. It's common for fans to be eager for new volumes, but the release schedules can be quite erratic in the world of light novels. Sometimes, the author might be working on other projects simultaneously, which can delay the release. Or there could be issues with the publisher's schedule. Until there's an official announcement, we can only speculate.
In the context of the 'Overlord' light novel, the 'Bonus Volume' is an exciting part. It often provides a different perspective on the story. It might showcase different relationships between the characters that we don't see as much in the main plot. For example, it could focus on the interactions among the Floor Guardians in more detail, or it could explore the history of the New World from a different angle, which all contribute to a more comprehensive understanding of the 'Overlord' world.
Some websites that might have the Overlord light novel for online reading are RoyalRoad and Wattpad. But be careful as not all of them might have the legal rights to host it.
There are likely other important characters as well. Maybe some of his loyal followers like Albedo or Shalltear Bloodfallen. Their loyalty and how they assist Ainz are often part of the story in the Overlord series.
Well, one key feature could be the further development of the characters. We get to see more of their personalities and how they interact in new situations. Another might be the expansion of the world - more details about the setting are likely to be revealed.
One possible highlight could be the development of new characters. 'Overlord' often introduces interesting characters, and this volume might be no exception.
Ainz is of course the most important character. His decisions and actions drive the plot forward. Albedo also plays a significant role. She is extremely loyal to Ainz and her actions often reflect her devotion. Then there's Demiurge, who is very intelligent and his strategic planning is crucial in many situations. These characters' interactions and their individual goals shape the story in this volume.
One key feature is the further development of the characters. For example, we get to see more of Ainz's strategic thinking as he faces new challenges in this volume. Another aspect is the world - building. The author delves deeper into the unique fantasy world, introducing new locations and races. Also, the plot gets more complex with various political intrigues and power struggles among different factions in the game - like world.