A detailed illustration of a wise, friendly older man with gentle eyes and a warm smile, closely resembling a grandparent. The illustration should retain realistic features but with a soft, hand-drawn quality, showing texture in the skin, gentle lines on the face, and kind eyes. The background is soft and light to emphasize the face, creating a welcoming and approachable look. This illustration should have a warm color palette and convey kindness and curiosity, suitable for an icon representing generative AI content for grandparents.