I'm not entirely sure specifically as it could vary greatly. It might be about an original character (oc) who is a descendant in a story based on the Leviathan concept within a fan - created fictional work.
There's a 'oc descendant of leviathan fanfic' that I've heard about called 'Descendant's Destiny'. In this fanfic, the OC is on a journey to discover the true meaning of their connection to the leviathan. It has some exciting action scenes and a great deal of character development. The author does a good job of exploring the concept of being a descendant in a unique and engaging way.
Power and responsibility are common themes. Since the OC is a descendant of leviathan, they often have to deal with new - found powers and figure out how to use them responsibly. Another theme is identity. They may struggle with who they are in relation to this powerful and often mysterious heritage.
It could be about an original character (oc) who is the son of the Leviathan in the DxD (High School DxD) fanfiction universe. Maybe it focuses on his adventures, powers, or his relationships within the world of DxD.
I'm not entirely sure about this specific 'oc son of the original leviathan dxd fanfic'. It might be a fan - made story in the High School DxD universe where the main character is an original character (OC) who is the son of Leviathan. Usually, such fanfics explore new storylines, relationships, and powers within the existing DxD world.
The main character is likely the OC, the son of the original Leviathan. There may also be other characters from the DxD universe such as Issei, Rias, and other devils, angels, or fallen angels.
One popular 'leviathan fanfic' is 'The Leviathan's Call'. It has an interesting plot that delves into the world of the leviathan in a unique way. The characters are well - developed and the writing style is engaging.
Some 'oc leviathan dxd fanfiction' stories might center around the OC having special powers or abilities that attract Leviathan's attention. Maybe the OC has a power related to water, similar to Leviathan's own abilities, which leads to an interesting bond between them. They could then team up to face common enemies in the DxD realm.