TELYUKA is a Japanese husband-and-wife 3DCG artist duo, Akihiko and Yuka Ishikawa, known for creating the hyper-realistic digital human "Saya," a CG high school girl that gained wide attention for its realism. Since its debut in 2015, Saya has evolved from a static image into an interactive digital human capable of real-time conversation and emotional expression through integration with AI technologies such as NEC's generative AI and Aisin's multimodal dialogue systems. TELYUKA's work emphasizes artistic and humanistic values within digital human creation, distinguishing their work from purely commercial avatars. They have collaborated with companies like NEC and Aisin to explore applications in partner AI systems and customer service, and their projects have been featured at academic conferences and in 8K video displays. Their approach combines high-end visual fidelity with research into empathetic, lifelike digital communication, making Saya a pioneering example of digital human innovation in Japan.