Professor Layton and the Eternal Diva

One day, Professor Layton suddenly receives a letter with an opera ticket enclosed. The sender is Janice, his former student and now a world-famous opera singer. In the letter, she mentions that her friend Milina, who died a year ago, has appeared before her in the form of a seven-year-old girl, claiming to have achieved immortality. After reading this bizarre letter, Professor Layton decides to go to the grand theater where the opera will be performed, accompanied by his young apprentice Luke and assistant Emmy, to investigate the incredible event. Upon arrival, they discover that the performance that evening is a new opera composed by Visla, adapted from the legend of the ancient immortal kingdom Ambrosia. This rumor of eternal life happens to be the mystery that Professor Layton's mentor, Dr. Reda, devoted his life to exploring. However, Layton uncovers an even more shocking secret: the true purpose of the audience members attending the opera was to seek immortality. A mysterious masked man appears on stage and announces that only one person present can gain eternal life. To determine the final winner, everyone must participate in a puzzle-solving competition.