The porn video tag "3d-porn-anime" refers to a specific type of adult content that combines 3D graphics with anime style artwork. This genre of adult content often features characters and scenes that are visually stylized, with attention given to detail, perspective, and movement. It typically involves animated scenes with three-dimensional models and settings. These videos may include sexual situations, interactions between characters, or explicit content involving anime-style figures. The combination of 3D technology and anime art style creates a unique and immersive experience for viewers who enjoy this particular niche within adult content.