visit to unknown (Naruto version)

prologue

  It was a normal day in Tempest. The most advanced and rich country in the cardinal world. The city was decades or even in some case centuries ahead than rest of the world in foods, culture, living quality, education, health care and scientific technology. Monsters,humans,demihumans, all live peacefully under the great demon lord Rimuru. But there is one more thing that this country is famous for.
The dungeon. And inside the dungeon two of the oldest beings are plotting something dangerous or mischievous ?

"Kuhahahahaha! this is our chance. We finally found the coordinates of another world. Rimuru is not here. That means we can have all the fun we want ! Kuhahahahaha !" Veldora said in glee.
"Hahahaha ! Yes master ! Now that Rimuru has gone in a vacation, we can do anything we want. So let's go!"
Ramiris was also happy. Then she activated the magic circle.
"Wait ! Master Veldora, master Ramiris ! Wait!" Berreta shouted. But to her dismay, the magic circle has already been activated. And the three beings inside the room disappeared.
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(A/N: Ramiris has gained her true form with the help of Rimuru, but she prefer her chibi form because, she can eat more cookies and deserts.)
(A/N: This is after 4th great ninja war and before the movie last.)
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It has been a year, since 4th great ninja war ended. Kumo has requested Konoha for a joint S-rank mission of utmost importance. Sasuke has reported of an underground organization, who is experimenting on the bodies of white zetsu. It's main base of operation is in the land of lightning. When Raikage, confirmed it, he also requested Hokage for a joint mission. So here infront of hidden leaf entrance, stood Naruto, Hinata, Sakura and Sasuke. Sasuke has came back for this mission. And Naruto is the official team leader.
While going to the land of lightning, through the forest, they sensed a huge pressure. Which resulted all of them except for Naruto to be on their knees. After some moments, a circle with some geometrical patterns, appeared in the sky infront of them. Bright light covered the surroundings.
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When the bright light cleared, two figures landed infront of them.