What is a small horse, Altman?

Aubrey Altman's Sagittarius likes freedom and doesn't like being bound by others, much like Aubrey Altman. After all, Gai Kureinai is the Lang Ke of Altman, and he always comes and goes without a trace. As soon as he comes on stage, the harmonica is always in front of others. Even Zofi invited him to join the guards, but he refused politely, making him a prodigal son of Altman.