Detailed Instructions: Given a text passage, you need to generate a suitable title as the output. The output title should be one of the words/phrases used in the passage and must be no longer than five words.
Q: Paragraph: Kurt and Riela were featured in the Nintendo 3DS crossover Project X Zone , representing the Valkyria series . Media.Vision would return to the series to develop Valkyria : Azure Revolution , with Ozawa returning as director . Azure Revolution is a role @-@ playing video game for the PlayStation 4 that forms the beginning of a new series within the Valkyria franchise . Question: what is the suitable title of the passage ?
A:
Legacy