It's a Miracle
Lord Yupa is a warrior and scholar in the 1984 film Nausicaä of the Valley of the Wind and its manga. The finest swordsman in the known world, he has, for many years, travelled the world in search of the fabled "Blue Clad One".
Lord Yupa has brown hair and a beige beard. He wears a brown hat, brown cloak, a brown military shirt and trousers.
He first appears in the manga and the movie when he is being chased by an enraged Ohmu. He is unidentified at first because he's wearing a Shohki Mask to protect him from the miasma of the Toxic Jungle.
Nausicaä's quick thinking (including a siren shell, some strobe grenades and a worm-flute) aids him in escaping the giant insect. The friends are re-united and the rescuted fox-squirrel becomes Nausicaä's companion Teto.
Later, at the Castle in the Valley of the Wind, he gave out various gifts to the community.
Found a spot in the heart of the forest in his youth that was purportedly "a barren desert of sand, burned and corrupt with poisons" that was the final stage of the Toxic Jungle, a climax forest, where he found sand that was free of poison and of metals unknown and he suspected people are unable to forge it  believes hypothetically Toxic Jungle is cleaning up the poisons . Jhil doesn't believe he'll see Yupa again .
Yupa understands Dorok. 
After being saved by Nausicaä, Yupa tells King Jhil that a few more kingdoms were swallowed by the jungle. Jhil asks Yupa to help him rule the Valley of the Wind, but Obaba says that Yupa must look for something.
After a thousand years of darkness, he will come. Clad in blue and surrounded by fields of gold to restore mankind's connection with the Earth that was destroyed; and he will guide the people of this planet at last to a land of purity.
He also tells Mito that he heard that a giant warrior from the Seven Days of Fire was under Pejitei, and it was dormant for a thousand years (it was on the Torumekian warship that crashed along with Lastelle, a princess from Pedjite that was a hostage).
Lord Yupa also stopped Nausicaä from killing Torumekian soldiers so he could say that the Valley tried to prevent their ship from crashing, and had finished burying the dead. Also, he said that they need a good reason for war, and to show courtesy and respect. Later in the movie, he found Nausicaä's secret room and found out what she was going to do (King Jihl gets shot).
When Nausicaä was taken to Torumekia, Yupa finds out the Torumekians are bringing the warrior back to life, and hears that the plane went down. Yupa and Mito go in the Valley's Gunship to look for the princess, and when they found her, Yupa jumps onto the Pejjitei ship, and starts to fight the Torumekians.
After the battle, the Pejitei plane heads to the Valley of the Wind, and Yupa sees eyes turn from red to blue. He also sees the legend come true.
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