Spark Portal

Although he had decided to develop a portal skill, he could not just develop it carelessly.

After all, he had seen quite a few kinds of portals, such as Doraemon's Any Door, Minecraft's Nether portals, Stargates and wormholes from sci-fi games, portals from Overwatch, and so on.

Yang Yunzhi weighed the strengths and weaknesses of all kinds of portals and ultimately decided to use the Sorcerer Supreme's portals from Marvel as his development direction.

Because this kind of portal emitted golden sparks when it opened, Yang Yunzhi called it the Spark Portal.

As for why he had chosen the Spark Portal as his first development target—

First, this type of portal basically possessed the functions of all kinds of portals, including Doraemon's portal.

Second, the Spark Portal was an extremely flexible kind of portal. Its size, direction, and even quantity could be adjusted freely.

Third, the Spark Portal was not only used for transportation. Its sharp edges possessed spatial cutting power and could be used to slice through hard objects.

If he ever encountered that so-called strongest creature in the world, when fists were no longer enough, wouldn't spatial cutting come in handy?

As for how to develop this kind of portal—

Yang Yunzhi believed that since he had already eaten the Door-Door Fruit, it meant he possessed the potential—or rather, the aptitude—to develop any skill related to doors.

With that in mind, he only needed to treat himself as a mage in training and copy Strange's process for learning portals.

He came to a supply warehouse at Marine Base 36. There was nothing inside, and it was spacious enough to develop his portal skill. It also provided some confidentiality.

The spy capabilities in the One Piece World were only average, but reporters' ability to take secret photographs was truly formidable. He did not want his portal ability exposed.

"First, calm your mind!"

"Then, picture the place you want to go in your mind!"

"Then, draw a circle?" Yang Yunzhi thought about it and felt that "draw a circle" was not quite accurate. It should be called opening a gateway!

He first tried to calm his mind, but quickly discovered that he could not settle down at all.

Mainly because he had been a shut-in in his previous life who loved reading novels. His thoughts were far too active, and he was naturally at odds with calming his mind.

Since he could not calm down, he naturally could not clearly visualize the place he wanted to go in his mind.

But he soon found a solution: use his eyes.

His Byakugan now had a detection range of thirty-two kilometers. He could find a secluded location within that range, use detailed observation to confirm its position, and then try to open a portal.

"Here!" Yang Yunzhi quickly found a spot. It was on a cliff at the edge of Glazed Town, where there was a six-square-meter stone platform.

"Open!" Yang Yunzhi worked hard to find that feeling and attempted to create a gateway connecting to that platform.

As for the gateway's appearance, of course it would be the Sorcerer Supreme's spark-filled portal.

This portal did not require calming his mind or meditation. He had longed for this ability, so he had not only watched the original films but also countless video clips and portal compilations.

It could be said that he could describe the portal even with his eyes closed.

He used his eyes to confirm the location, fixed the portal's form in his mind, and then waved his hand!

"Zzt, zzt..." A sound like a steel bar being sawed came from before him, accompanied by golden sparks!

"It actually worked?" Yang Yunzhi's eyes widened at once!

Everyone knew that Devil Fruits were abilities shaped by will. As long as you wanted to develop one, and the ability you envisioned was related to the Devil Fruit's description, you could probably develop it.

But that understanding had come from anime. Now, he was putting it into practice himself!

The feeling of turning a conjecture into reality was simply incredible!

"Keep going!" The appearance of the sparks greatly boosted Yang Yunzhi's confidence, and he immediately began his second attempt.

As his stamina was rapidly consumed, a circular portal finally took shape with a sweep of his arm!

And on the other side of the portal was none other than the stone platform on the seaside cliff that Yang Yunzhi had locked onto with his Byakugan!

"I succeeded on my second try. I really am a genius!"

Yang Yunzhi truly was a genius, but there was another reason: developing Devil Fruit abilities was not actually that difficult to begin with.

Most of the time, whether a Devil Fruit could be used in creative ways depended on whether one could think of that direction for development. Once the idea came, coupled with firm resolve, the subsequent development often followed naturally.

What was more, when others developed Devil Fruit abilities, they usually had only a vague impression of the ability they wanted.

But Yang Yunzhi was different. He had a clear concept of the ability he wanted to develop.

With so many advantages combined, if he still could not quickly develop this portal, that would truly be hard to justify.

"Still, this portal consumes quite a lot of stamina. Is that consumption fixed, or is it only using so much stamina because I'm not familiar with it yet?" Yang Yunzhi assessed his stamina and felt that he could only open around three portals before he could no longer continue.

And opening a portal was not a one-and-done affair. Maintaining it also consumed stamina.

Yang Yunzhi dispersed the portal, then opened another one.

This time, he discovered that the stamina consumption seemed a little lower.

"Looks like it was because I wasn't familiar with it before. The more practiced I get, the lower the consumption should be!"

After closing the portal, Yang Yunzhi opened another one.

"I still have some stamina left. I can try adjusting the portal's size!"

Now was the time to practice proficiency, so naturally he would open small portals. That way, he could open many more, or even open several at once.

But Yang Yunzhi quickly discovered that he could not open two portals simultaneously.

It seemed to be related to whether a person could focus on multiple things at once. Every portal required mental effort to maintain, and if he could not divide his attention, he naturally could not maintain two portals at the same time.

"Looks like I need to practice multitasking too!"

Yang Yunzhi no longer opened large portals. Instead, he opened tiny portals only ten centimeters in diameter, and he could open several of those.

And he no longer opened portals toward the seaside. Instead, he opened them within the warehouse.

This confirmed something else for him: a portal's stamina consumption was also related to teleportation distance.

Now, the portals he opened were small and the teleportation distance was short, so their consumption had dropped to almost nothing.

To put it simply, opening a portal with a teleportation distance of one meter consumed about as much stamina as taking one step.

With such negligible stamina consumption, his proficiency with the portal skill began to soar.

Not only could he skillfully control the portal's size, but he soon mastered how to adjust its position as well. Now, the portals could be placed vertically, horizontally, or diagonally!

After that, he reduced his use of gestures. Soon, he no longer needed to make hand motions to open a portal; a thought was enough!

But there was one problem: once he fixed a portal's opening position, it could no longer be moved!

But Ancient One's portals did not seem capable of moving either, so that was fine.

"Come to think of it, doesn't Ancient One's spatial magic also have Mirror Space?" Yang Yunzhi pondered. That technique looked impressive too, and it could isolate damage, making it very useful when clearing out pirates.

Hmm, he would try it later. He should be able to develop that too.