Hi Alan!
Fully synthetic.
I use the brand from my local autofactors, that the manufacturer lists to meet the specification for my engine type, the 2GR-FE.
For the weight they say 5W-30, and I choose to use this as it's available in a 20 litre drum, because I change oil in all my vehicles far more often than routine!
According to the JPNZ manual, yours, the 2AZ- FE engine, says
"0W-20 is the optimum oil for this vehicle"
But - 5W-30, and 10W-30, are listed too.
As usual there is the little chart with ambient temperature and oil weights, but all of them are good down to at least -20°C and up to over 40°C.
However, for mine the JPNZ says 5W-20 and I use 5W-30, so..... your choice!