Stark might usually have seemed carefree, but he took this matter more seriously than anyone. Otherwise, he would never have spent months on end in his underground workshop, creating so many suits of armor.
But powerful as those suits were, their usefulness stopped at Earth. Against the space-scale wars that would come in the future, they would be utterly useless.
That was why Stark was so anxious now.
"Th-then, do you have a solution?"
Stark asked, his face full of hope. The greatest problem he faced right now was energy.
The most compact and powerful energy source in the world at present was the nuclear reactor in Stark's chest, but even that wasn't enough to support his ambition of protecting the whole world.
No matter how powerful an energy source was, that only applied on Earth. It simply couldn't support combat in space. Only a more powerful energy source could do that.
Stark stared hard at Han Yu, trying to find some clue on his face, hoping to see whether he was talking nonsense.
But on Han Yu's handsome face, his slightly narrowed eyes and the faint upward curve of his lips made him look utterly relaxed and confident. He didn't shy away from Stark's gaze in the slightest.
"The price? Tell me, how much would it take for you to sell me your technology? A hundred million dollars? A billion? Ten billion? Or a hundred billion or more? Whatever you name, I can afford it!"
Seeing Han Yu hesitate, Stark thought he was considering the price and excitedly offered the amounts he could accept.
Han Yu wasn't at all surprised to see him so beside himself with excitement. On the contrary, he thought it was perfectly normal.
Han Yu rubbed his chin. What should he ask for?
Money? He didn't need it. The thirty billion taels of silver he had obtained in Konoha could be converted into any world's currency through the General Store System. After conversion, Han Yu now had nearly three hundred million dollars in his account.
That might not have been an extraordinary sum on Earth, but it was enough to cover Han Yu's daily needs. After all, he wasn't going to spend money like water every day like other rich young masters. He intended to become a man who stood above the heavens and the myriad worlds.
Naturally, he couldn't indulge himself all day just because he had a little money.
"What should I ask for..."
For the moment, Han Yu couldn't make up his mind either. Should he ask for Iron Man's armor? His nuclear reactor?
Having just obtained the Green Lantern Ring, he found those things, which could be called divine artifacts on Earth, no longer held any appeal for him.
As Han Yu pondered, the general store's voice suddenly rang out in his mind.
"Extra mission triggered: 'Recruit a store employee'!"
Han Yu froze, a spark of excitement flashing in his eyes. He had actually triggered an extra mission?
Extra missions offered the richest rewards of all the missions issued by the system!
The advantage of extra missions was that their rewards were not fixed. The higher the degree of completion, the better the reward could be; the lower the degree of completion, the lower the reward would naturally be.
But Han Yu was a "cheat player." As a transmigrator, he knew the Marvel story that followed like the back of his hand. The moment he saw the mission, he already had a candidate in mind.
The super robot, Ultron!
"Nice!"
As soon as the mission appeared in his mind, Han Yu made his decision. He chuckled and said, "I don't want your money. How about this? Help me make a game. I'll provide the concept, and you take care of everything else."
The request left Stark stunned. What kind of request was that?
To put it seriously, what he wanted could no longer be measured in money, yet Han Yu was saying that its price was merely helping him make a game?
As he thought about it, a look of extreme fury appeared on Stark's face, his emotions igniting in an instant.
Covering three steps in one, he charged straight up to Han Yu, seized him by the collar, and roared,
"Are you fucking playing me? I don't have time for jokes. Do you have it or not?!"
The shout was frightening. Stark's face had turned red with agitation; it was clear he was truly desperate.
"Let go of me."
The words came from Han Yu without any discernible tone, good or bad. They seemed to come from his mouth, but Stark felt as though the voice came from every direction.
An aura utterly at odds with Han Yu's age surged from him, frightening Stark into reflexively letting go.
Stark swallowed with difficulty, a trace of fear rising in his eyes. From this young man, who was ten or twenty years younger than him, he had actually sensed the bearing of one who reigned over the world.
Han Yu straightened his clothes. His voice carried a smile as always, but it sounded utterly devoid of warmth.
"One last chance. Whether you agree or not is up to you. I won't force you."
That was indeed what Han Yu thought. He was a transmigrator, after all, and he didn't want to spend all day traveling back and forth through other worlds. If he didn't bring over some games from his previous life, how could his life be considered perfect?
Han Yu could obtain game concepts from his previous life through the General Store System, but making the games would require the cooperation of local game companies.
He believed that as long as the games could be made, once they went on sale, he would definitely become one of the richest people in the world!
After all, the gaming market was terrifyingly huge. Besides, in this world full of gods and ghosts, a good game could effectively help people lift their spirits.
Stark looked at the smile on Han Yu's face. Even facing him, Han Yu showed no sign of backing down. That kind of bearing was hardly something an ordinary person in his twenties could possess.
"All right, I agree."
After hesitating for a while, Stark chose to agree. It wasn't that he thought the condition was too demanding, but that it was too simple—so simple he couldn't believe that was all Han Yu wanted.
"Then that makes things easy."
Seeing him agree, Han Yu raised his hand, and several strands of visible, tangible green energy emerged in his palm, slowly gathering together.
Even Tony Stark, a member of the Avengers, widened his eyes. He had never seen anyone materialize energy and control it so smoothly.
Half a minute later, the green energy became a translucent green ring, much like the Green Lantern Ring on Han Yu's finger, floating above his palm.
"This is what you wanted. Take it."
Han Yu spread his fingers, and the ring drifted unsteadily over under his control.
Stark quickly opened his hands and let the ring fall into them.
"This... what is this?"
Stark was somewhat puzzled. The way Han Yu had casually condensed energy into a ring-shaped object was utterly mysterious. He didn't dare just take it away like this.
"This is a Green Lantern Ring. As for what it does and the energy it contains, you'll know once you take it back and study it yourself," Han Yu said with a smile.
As one of the divine artifacts of the DC Universe, even a subsidiary Green Lantern Ring was sure to surprise Stark with the energy it contained.
Stark gripped the Green Lantern Ring tightly and said to Han Yu in all seriousness, "If this works, whatever you need in the future, just tell me. I'll do everything I can!"
Before leaving, he asked for Han Yu's phone number and left him a bank card, saying it contained three billion dollars that Han Yu could use however he liked.
With that, he immediately said goodbye to Han Yu and headed for Avengers Tower. He couldn't wait to study the ring and find out exactly what was so remarkable about it.
Han Yu beckoned with his hand, and the bank card flew over to him, floating above the center of his palm, supported by invisible mental power.
"Do your best, Stark. Whether I can complete my mission depends on you."
Meanwhile.
Stark raced all the way back to Avengers Tower in just ten minutes. He immediately ran to his workshop and began studying the green ring he had obtained from Han Yu.
"JARVIS, scan this ring from every angle and compare it with the nuclear reactor I'm currently using."
"Certainly, sir," the artificial intelligence JARVIS replied.
Stark stared intently at the screen before him, watching the data merge continuously, his expression shifting.
"Sir, the calculations show that the energy output of this ring exceeds that of the nuclear reactor you currently use. It could even replace your current nuclear reactor!"
"Replace it completely?"
Looking at the data displayed on the computer, Stark widened his eyes. He had never imagined he could find a solution in a small general store.
Without realizing it, Stark's gaze drifted to a white business card lying off to one side. Its contents were very simple, with only two lines of text.
A Certain General Store.
Han Yu.
The business card had appeared suddenly on Stark's desk. He never brought things like that into his underground workshop, so he checked the footage recorded in the workshop.
The business card had appeared on the desk without any warning.