S1·E36 Stop the Old Man! Baaya's Secret Mission

Chocolat's Grandfather came back to the human world and invited Chocolat and the others to relax for a while. But baaya is ticked off with her Grandfather. So they made a plan to make him return to the magical world but in the middle of the date baaya's magic couldn't handle anymore so she confront him and asked why he has to return in the human world. There they realized that he is doing this for Chocolat because he was worried that she was sad and alone.