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Oro learnt the Nail Arts from the Great Nailsage Sly along with his brothers Mato and Sheo. Of the three disciples, he was not the most skilled, with his signature move being the Dash Slash. While Oro is respectful of the Nailsage's teachings, he was reluctant to obey them to the letter.
Oro always seemed haunted by something. After a falling out among the Nailmasters, he chose to move away in seclusion. He did not leave his brother Mato in good terms and still owes him something. He set a hut in the far reaches of the Kingdom's Edge to avoid company.
Oro can be found in his hut at the end of Kingdom's Edge. Reluctant of the Knight's company, however, he concedes to teach them the Dash Slash for 800.
While always being uninviting, Oro does not hide his appreciation of the Knight's skills as a disciple. He comments on each of the Nail Arts the Knight has learnt while remembering his brothers and master. He even asks them to tell Mato to wait a bit longer before Oro gives him what he wants. When the Knight finally becomes a Nailmaster, Oro hopes that his participation in their training helped redeemed him a bit towards the Nailsage.
Oro's mind is summoned to Godhome by the Godseeker. There, he defies the Knight to prove his worth in the Nail Arts. Upon being seemingly defeated, his brother Mato appears. While they stare at first at each other with unveiled intensity, Mato's unexpected assistance invigorates Oro. They then help each other to fight the Knight. After both are defeated, they bow respectfully to their opponent. The Brothers Oro & Mato are mainly fought at the peak of the Pantheon of the Master and later within the Pantheon of Hallownest.
Additionally, the Knight can bring a Delicate Flower to Oro in his hut in Kingdom's Edge. He refuses it, telling the Knight he would throw it away if they left it to him. Yet, if given the Delicate Flower, Oro puts it in a vase upon the Knight's return to his hut.
Hmph. How did you find me, down here where the world ends?
Yes, I know why you're here. You came to learn a Nail Art from the legendary Nailmaster Oro.
It is the law of the Great Nailsage that I must pass down my teachings to those who are worthy.
But no law forbids me from exacting a payment for my time. If you truly wish to train under me, prove it with Geo!
"Those who do not share their strength will never learn." My master used to say that.
Substitute "Geo" for "strength" and you'll have my own views on the matter. Begone!
So what will it be, traveller? Will you pay the price asked of you, or will you leave this place unenlightened?
After learning Dash Slash
Hmph. I must say, you are an excellent pupil.
Your skill with the nail, and your thirst to become stronger... you remind me of my brothers.
I have taught you all I can. Go back into the world, traveller, and leave me to my solitude.
Listening after learning, exhausted dialogue
I have taught you all I can. Go back into the world, traveller. Leave me to my solitude.
Brother Mato, in your lonely home at the top of the world... do you still think of me as an enemy?
In the future, if you will listen... I will tell you why I chose to tread this path.
Listening after returning
You've returned, though you were not invited.
As my pupil, it is lawful that I allow you rest and shelter, but do not stay longer than you need to.
That Nail Art... you have been training with my brother Mato.
He has strange notions of loyalty and honour. I'm sure he was difficult and unpleasant to train under.
Did he mention my name to you? If he does, tell him to be patient. He'll be waiting a while longer before I give him what he wants.
I see you've been taught a Nail Art by my brother Sheo. How fortunate of you.
Yes, he was the mightiest of the Great Nailsage's pupils, far outshining Mato and myself. My brother and my master loved him very much.
He was always aloof, but... not unkind. When we last spoke, he said he was going to teach himself something completely new. I wonder if he achieved that goal.
What is this? Do you think it becoming for a pupil to drop rubbish in their master's home? Or is this gaudy flower your idea of a gift?
I've no use for such things. Take it with you, or else I'll toss it outside to be eaten by vermin.
Nailmaster Oro is found in Kingdom's Edge.
Exterior of Oro's hut
Training dummy east of Oro's hut
Oro valuing the flower the Knight gave him
Oro teaching his Nail Art
Oro is the only Nailmaster who must be paid in order to learn his Nail Art.
To the east of Oro's house is the impaled corpse of a Great Hopper dressed in a Nailmaster outfit, used as a training dummy. Hitting it with the Dream Nail reveals the dialogue: "Stronger... Brothers...". When it is attacked enough times (25 attacks), two live Great Hoppers fall from the ceiling and attack the Knight.
Leaving the room resets the dummy, allowing it to be attacked again to summon two more Great Hoppers. This can make getting its Journal entry easier.
↑Sheo: "So you met my brother Oro and convinced him to teach you his Nail Art."
↑Sheo: "[Mato] was not the most skilled pupil himself, but his enthusiasm and his kindness set him apart."
↑Oro: "[Sheo] was the mightiest of the Great Nailsage's pupils, far outshining Mato and myself."
↑Oro: "It is the law of the Great Nailsage that I must pass down my teachings to those who are worthy. But no law forbids me from exacting a payment for my time."
↑Sheo: "He always seemed to be haunted by something, though I never learned what."