She is Ho-Rang's talking cat. When it's school time, she changes into a human in order to spy for Ho-Rang. Ya-Ho is the first friend that Myung-Ee meets in Chun-Ah High. At first, she couldn't speak really well. Then, she could only move her mouth to make out words. Finally, with Myung-Ee's small advice, Ya-Ho was able to speak using her voice. She can't speak human well so her words are choppy. Despite that, what she says can come out really funny. Ya-Ho acts sometimes like a mentor torwards both Myung-Ee and Ho-Rang when she lectures them.