Instead of calculating quaternions and bone rotations, pose MMD characters with simple declarations: head turn left 30; arm_r bend forward 90; elbow_r bend forward 135; Real-time preview, anatomical constraints, syntax highlighting. Complex poses that take hours to manually adjust can now be described in readable text. Live demo: https://mpl.love GitHub: https://github.com/AmyangXYZ/MPL Finally, 3D animation with human-readable syntax instead of matrix math.