|Air Date||August 21, 2004|
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|Love Detectives||Robber of Memories|
Love Intrusion is the twenty-first episode of Mermaid Melody Pichi Pichi Pitch Pure. 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.