The weasel has experienced too much pain before, and is also in a deep mood. In addition, the kaleidoscope wheel writing eye has been used for a long time, which makes the body unable to bear weight.
First, stop the water. Stop the water is stoat's best friend and teacher. However, stop the water in order to prevent his eyes from falling into the enemy's hands, he gave the other eye to the stoat, and then jumped into the river to kill himself. The stoat also opened the kaleidoscope to write wheel eyes.
In addition, the weasel had no choice but to kill the family. He accepted the order above. He did not shed tears when killing other people in the family, but he cried bitterly when facing his parents.
The second is the frequent use of the kaleidoscope wheel eye. The weasel is not an eternal kaleidoscope, so the use of the wheel eye is limited. When she confronts Sasuke, her blindness is more obvious.