Here's a breakdown of the factors to consider:
Arguments for "neko":
* Cat-like features: If the half-succubus has obvious cat-like features (ears, tail, maybe even feline eyes or a more lithe, agile body), they could definitely be considered neko-like.
* Feline essence: Even if the physical features are less pronounced, the "cat" part of their heritage could still influence their personality and behavior, leading to traits commonly associated with nekos, like being playful, curious, or even mischievous.
Arguments against "neko":
* Succubus lineage: The succubus aspect could be seen as overshadowing the feline one. The term "neko" is generally associated with a more innocent, even childish, kind of cat-human hybrid, while succubi are known for their alluring and often dangerous nature.
* Context and intent: Ultimately, whether you consider this being a "neko" depends on how you want to portray them. Are you emphasizing their feline features and personality? Or are you focusing more on their succubus heritage?
Conclusion:
There's no single right answer. It's up to you to decide how you want to portray this character. You could call them a "neko" if their cat features and personality are the main focus, or you could choose another term to highlight their succubus side. Or, you could create your own term to describe this unique being!