Tomoyo and Kero-chan get along very well. Tomoyo even came up with his nickname! She always keeps in mind that the way to make Kero happy is through his stomach. She saves him cake and cookies, just like Sakura does. Tomoyo is really the only person without magic that Kero seems to respect. She even included Kero when she distributed the cell phones. Tomoyo also always makes sure to give Kero plenty of screen time on her videos of Sakura capturing the cards.