Inside FUWA & surfaces SAKU are the key words for toasting.
By controlling both the time and temperature, tasty toasted breads are available.
Try and error to decide the best combination of the time and temperature,
You should challenge to get it.
Tiger or Elephant ? Other major makers, such as Hitachi or Panasonic, were out of scope since it's a minor business for them.
This time I chose Elephant, seeing the position of the grill between the top and bottom heaters. You'll see the grill is positioned lower than the middle : simple but effective for toasting the top and bottom surfaces evenly.