Millennia ago, the Azrans built the Golden Garden. Before the events of Last Specter, Loosha was born in the Golden Garden. After her parents died, she ventured out through the gateway to the lake in the gardens of Barde Manor, where she met the young Arianna and Tony.
When Loosha breaks down the floodgates of Misthallery's dam, the town is flooded with water. The lake now drained, a gateway is revealed. Professor Layton manages to open the gateway, and he, Emmy, Luke, Arianna, Tony and Loosha walk down the pathway into the garden. Here, they discover that it is not riches that make the garden legendary, but its prehistoric beauty and its pure unpolluted air.
Having used the last of her strength to break down the dam, Loosha collapsed, and died with Arianna and Tony by her side. Her body was carried by the river current to the lake. She had sacrificed herself to bring Arianna to the garden, as she knew that the air could save Arianna's life.
At first, the garden's discovery was kept a secret until Arianna had recovered from her illness. When she did, the discovery was published in the papers, and it began Layton's career.