A cute 3D cartoon insulin syringe mailman delivers sugar cubes to a flexing muscle character and a smiling liver character.

> A cute and playful 3D cartoon scene on a black grand background. In the center, there's a smiling cartoon character shaped like an insulin syringe, dressed as a mailman: wearing a classic postman hat, a crossbody mailbag, and a kind, cheerful face. This insulin character is delivering small cube-shaped white sugar packages to two destinations: 1. A cartoon muscle character — strong, athletic, with big biceps and a happy, friendly face. 2. A cartoon liver character — soft, rounded, smiling warmly. On the side of the scene, there's a fat storage warehouse, drawn in a cartoon style, slightly in the shadows. Additional sugar cubes are shown: Some are standing in line, waiting for delivery. Some are inside small mail envelopes. One sugar cube is being handed directly to the muscle by the insulin character. Another sugar cube is sitting on a small suitcase, ready to be stored in the fat warehouse. The scene should feel fun, educational, and visually clear — perfect for an Instagram story explaining how insulin delivers sugar in the body. See more