第 21 集: Lucia發現了Kaito的家門鑰匙，並回想起在他外出期間打掃的承諾。

21

Lucia finds the key to Kaito's house and remembers the promise to keep his house clean while he was gone. When she is cleaning the bathroom, Lucia accidentally gets wet and decides to take a bath. Meanwhile, Kaito realizes that someone is in his house... Also, Alala gets introduced in this episode. (Source: Wikipedia)