What is the capital of the Republic of the Philippines?

Manila - Manila is part of the metropolitan area. It is made up of neighboring towns and cities such as Quezon City, Pasig City, and Pasay City. In 2003, the population was around 8 million.

All places in Manila looks like a city. Maybe there is a certain requirement where a place can be promoted as a city

I think they update the requirements and as of now, they require the place to have 300,000 in population with good reputation.