Tools/Materials: Nintendo SWITCH, SWITCH System 1 1.0, Legend of Zelda: Breath of the Wilderness 2.33.
1. The main sword is in the forest of Clogg. The location on the map is as shown in the figure.
2. Find the altar indicated by the arrow in the forest of Clogg.
There is a sword in the middle of the altar. Press A to pull it out, and then trigger a story about the princess.
4. After the plot is over, the dragon will consume thirteen drops of blood by pressing a sword to draw it. If it's not enough, don't draw it.
5. Successfully win the Master's Sword.