This is the VWAP for JP225, a stock index CFD.
It displays the VWAP for the day, taking into account the flows from the previous day in Asia, Europe, and the US.
In other words, it is a two-day VWAP.
The anchor is set at 9:00 on the previous day, and the VWAP line is shown until 15:00 on the current day.
The trading strategies using this may be limited, but this is exactly what I wanted.