Layton Kyouju to Eien no Utahime

A professor known for his puzzle-solving abilities and his apprentice are invited to an opera by a former student. They discover that most attendees are there to compete in a series of puzzles, with the winner supposedly granted eternal life. The situation becomes more complex with the claim that a deceased young woman has been reborn as a child and the pursuit of a forgotten civilization. As the professor navigates these challenges, he works to uncover the truth behind the many riddles presented.