"That could be a failsafe, but I'm not sure if they'll still resonate once the door to your world is closed. So, Batman will have his own way."
The alternate Batman's lips curved into a smile, and he exchanged a knowing look with his other self.
Barry finally understood.
"So… you're going to close the door to our world first? What about this world?"
Even with their masks obstructing their expressions, everyone could feel Barry's internal anxiety.
"Don't forget, there's still a Batman in this world, and a Robin who was Batman's assistant for many years."
The alternate Bruce looked at the alternate Harvey beside him.
"We will do our best to delay that day from arriving. We hope you can find a way to save our world before then, and we will do everything we can to buy you time."
The alternate Harvey said solemnly.
Batman also nodded gravely:
"I will. Now, the question is how to blow up the door leading to our world."
"Use this!" The alternate Batman pointed to the bat symbol on the ground.
"This material is the same as the metal Lex Luthor created, and there's more of it. It represents Dark Matter. When activated by enough energy, it has the ability to distort space-time and rewrite reality. After killing Luthor, I collected the remaining material from LexCorp and crafted another Batarang."
As he spoke, both Batmen simultaneously looked at Barry.
Only Barry could release such immense energy.
"The Flash, we'll stick one Batarang in front of the door. You'll need to hold the other Batarang, run as fast as you can to give it enough kinetic energy, then throw it. The two Batarangs will collide, activate the energy, and close the door."
Batman said to Barry.
Their movements were swift.
Before long, they found the other Batarang, went to the door in the sewer, and crossed worlds again.
"Jason!"
Nightwing quickly took Jason and Jevonni from Batman and Barry.
"Their minds were invaded, but thankfully it was interrupted in time. However, we can't be sure of the long-term effects yet. Take them back to the Batcave immediately for a full medical examination, especially their brains."
Batman instructed Nightwing.
The latter nodded to the former, then looked at the Batman and Harvey Dent on the other side of the door with a probing expression. He quickly scooped up Jevonni and, with Jason on his back, ran swiftly away.
"Now, The Flash, it's up to you."
The alternate Batman said to Barry.
"We'll find you again. We'll lead you out of this abyss."
Barry's eyes were filled with determination. He then squatted down, Batarang in hand, and assumed a running stance.
The next second, red lightning flashed, and Barry's figure instantly transformed into an afterimage and vanished.
If anyone were moving fast enough, and had good enough eyesight, they would clearly see a red blur shooting out of Gotham, crossing the vast Atlantic Ocean, traversing the African grasslands and the Great Rift Valley of East Africa, crossing the deserts of the Middle East, going over the back of India, climbing the roof of the world, flowing over the surging Yangtze River, and finally speeding all the way back from the Pacific Ocean to the west coast of America, crossing the entire country, and arriving once again on the east coast of Gotham.
At this time, Qingshui and Batman had already left the secret room in the sewer and were monitoring the scene.
This was to avoid being caught in the crossfire.
At Barry's speed, the kinetic energy carried by this Batarang due to inertia would be incredibly astounding and immensely powerful.
The two Batarangs collided precisely, and the powerful energy activated them, instantly triggering a violent explosion.
After throwing the Batarang, Barry quickly retreated.
*BOOM!*
A deafening explosion echoed through the sewer, causing another minor earthquake in downtown Gotham.
*WHOOSH!*
With a flash of red light, Barry ran out of the sewer entrance, leaning on his knees, panting heavily.
"Gravity detection data is back to normal, spatial anomaly has disappeared. The door should be closed."
On the other side, Batman looked at the data on the screen of his wrist device and said.
After finding Barry, the three followed their original route. Qingshui blasted through the rubble, and they rediscovered the altar.
The portal had vanished, leaving only ruins and broken owl statues.
"This matter is finally, temporarily, concluded."
Qingshui sighed.
The Promethium dagger's Speed Force reserves were low, only 48% remaining.
However, Cisco and Barry should be able to find a way to recharge it.
Barry didn't reply, but an indescribable sense of urgency filled his heart.
This world was still very dangerous. The threat came not only from within the world but also from beyond it.
He needed to become faster, stronger!
Batman's expression was calm and steady; it was impossible to tell what he was thinking.
...
...
Naruto World.
Outside a town in the Land of Rain.
"Nagato! Konan! Master Jiraiya! I'm home!"
A orange-haired boy ran towards a small house in the rain, carrying a bag of breakfast in one hand and a newspaper in the other.
Back in the warm house, Yahiko placed the breakfast and newspaper on the table and flipped the nameplate on the shelf with his name on it to the red side, signaling that he was home.
"You're certainly diligent, Yahiko!"
Jiraiya, wearing frog pajamas, stretched and picked up the newspaper from the table.
"So, has the canal been dug yet?"
The headline on the newspaper clearly reported the impending signing of a navigation agreement between the Land of Wind and the Land of Rain.
"Huh? Is that a good thing or a bad thing?"
Yahiko asked, his mouth full of food.
"It's a good thing for both the Land of Wind and the Land of Rain. The Land of Wind won't suffer from excessive water shortages anymore, and the Land of Rain will gain the Land of Wind's protection. Economic exchanges between the two countries will become more frequent, which will promote post-war reconstruction and development for both."
Jiraiya said to Yahiko.
But for Konoha and the Land of Fire, this was bad news.
Because both the Land of Wind and the Land of Rain border the Land of Fire, the closer the ties between these two countries and the stronger they become, the greater the threat to Konoha.
"That's great! Master Jiraiya, isn't this also an example of mutual understanding between people? No, it's mutual understanding between nations! Both the Land of Wind and the Land of Rain understood what they and the other possessed and needed, and through this canal, they exchanged goods, bringing about peace!"
Yahiko said joyfully.
Jiraiya smiled and pressed down on Yahiko's head.
"You're right. People can understand each other, and nations can understand each other. As long as everyone, every country, can be like the Land of Wind and the Land of Rain, peace will surely come!"
Jiraiya seemed to have forgotten how many years of war the Land of Wind and the Land of Rain had endured before the canal was built.
Ultimately, mutual understanding between nations is earned through strength.
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