In the Pokemon World, Sasuke was waiting in the waiting room for his turn in the tournament while Ash's group was helping on healing both Shiro and Rai.

Sasuke: Are they going to be alright?

Serena: Yeah, luckily their wounds are not serious.

Sasuke: Good, I just don't want them to suffer the pain for too long.

Bonnie: Still, that fight was crazily intense! It gave us chills!

Clemont: You have to be careful next time, Sasuke. It will be a very problem for you and your Pokemon.

Sasuke: ...I understand.

Announcer: The next tournament is about to start! Trainers! Take your places!

Serena: That's you, Sasuke! Go out there and win!

Sasuke: Alright.

https://youtu.be/AU3O16wuzaI

Sasuke went off to the battle stage while the audience are cheering loudly.

Announcer: On the right side! Is the wandering trainer from another world! Sasuke Uchiha!

Sasuke: Hmm... (I have to think carefully if I don't want to fall to losing)

Announcer: And on the left side! Is the Kanto gym leader that is also the new leaf of the gym leader history! Gary Oak!

He could see on the left side of the arena, he could see Gary coming in with a really arrogant style that made the whole audience cheers for him.

Sasuke: (This kid has some big head alright...)

Gary: So, you are my opponent? I'll have you know, my skill is unbeatable. Check these out!

Gary bring out a small case from his pants and shows him all of his 10 gym badges.

Gary: These gym badges shows my superiority on pokemon battle experiences!

Sasuke: (10? But I though...)

Gary: So without further ado! Let's battle!

Sasuke: *Sigh* (He is oddly familiar to someone I know...) Alright! I'm counting on you two! Chairo! Mizu!

Both Chairo and Mizu came out their pokeballs as Gary observe his pokemon carefully.

Gary: You brought out a Chespin and a Glaceon... Alright! Go forth! Scizor! Arcanine!

Gary brought his pokemon out of their pokeballs, but his choice of pokemon made Sasuke flinched a bit.

Sasuke: So... you go for the type advantages?

Gary: Absolutely! And I'll make sure none of your pokemon's move will be able to outsmart mine!

Sasuke: I see (He seems to want to turn the table around really quick, so I better watch where I'm going and strike at the right time)

Suddenly Sasuke's mind were linked with Chairo and Mizu who seems to be a bit scared by their enemy.

Chairo: (Wh-What should we do, Master? They seem very tough)

Mizu: (Yeah, let alone they have type advantages against us)

Sasuke: (If we want to get out of this mess, we have two options: We use what we have learned so far to counter that advantage, or we trick them to attack themselves)

Chairo: (Will those work somehow?)

Mizu: (Well, we might as well wait for Master's command to attack)

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In the Shinobi World, the electric board was shuffling names for the 4th battle to start, it then reveals the next battle is going to be Pikachu vs Yurui

Pikachu: Huh?! My turn?! Alright! Finally!

Ash: Cool! Good luck out there Pikachu!

Sylveon: You can do it baby! I believe in you! Oh, here's something to cheer you on.

Sylveon gave a kiss on Pikachu's cheek which made him blushes madly.

Pikachu: A-Alright! I'll give it my best shot!

He then run down from the platform towards the battle arena and he saw Yurui wasstanding across him while chewing gum.

Yurui: I'm fighting against a rodent? Heh, I'm guessing this will be easy then chewing a jaw breaker candy.

Pikachu: Hey I'm not a rodent!

Mirai: Alright then. Fourth battle! Pikachu vs Yurui! Begin!!

Pikachu uses agility to make himself move faster, he then uses double team to make after-images of him to confuse Yurui.

Pikachu: (This should work! Because my opponent always gets confused when I use this)

But Yurui wasn't flinching at his moves, let alone even looking at it while he was still chewing gum.

Pikachu: (Huh? Why is he not moving at all?)

While the fight was still happening, Shikadai's team were observing the fight calmly.

Inojin: Is he trying to confuse Yurui by making after-images?

Chocho: *Chews on some potato chips* I don't really think that type of childish trick would work on someone like him.

Shikadai: I remember him from the previous chunin exam. He means business alright.

Inojin: Will he even survive though? I'm not quite sure.

Yurui blew out a bubblegum before it flew towards all the after-images of Pikachu.

Pikachu: (A bubblegum? What is he--)

Suddenly the bubblegum popped so hard, it was like an explosive. It sent Pikachu flying before he hit the wall.

Sylveon: Pikachu!!

Pikachu: Wh-What the?!

Yurui: You have to be careful, my gums stings sometimes. Although I don't need to explain it because a rodent like you would never understand.

Pikachu: You bastard...

Yurui then blew more bubblegums towards Pikachu before he uses volt tackle towards one of the gum.

Pikachu: Eat this!!

But when he touches the bubblegum, it pops again and sent Pikachu flying very hard before he hit the wall again.

Pikachu: O-Ouch...

Yurui: You are a very idiot rodent indeed, I might as well do this.

He then blews some bigger bubblegums that surrounds Pikachu and pinned him against the wall.

Shinki: That rodent is cornered alright.

Yodo: Well this is truly a good show

Araya: I agree, I guess he wasn't much of a someone who is prepared

Shinki: Don't lose focus, the two of you. I believe even he is cornered, he got some tricks up in his sleeve.

Araya: Well, can't wait to see what he is up to.

Yodo: Me too

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In the Pokemon World, the battle between Sasuke and Gary started with Gary giving the first command.

Gary: Alright! Scizor! Use Bullet Punch!

Sasuke: Mizu! Use Dig!

Scizor flew towards Mizu in high speed, but Mizu was quick enough to dig down and dodge Scizor's attack.

Gary: Arcanine! Use Flamethrower!

Sasuke: Chairo! Use Cut!

Arcanine blasted a big gust of lame towards Chairo, but he created a simple blade made by his aura and put it in front of him, splitting the flamethrower into two.

Sasuke: Just in time.

Gary: Not yet! Scizor! Attack the Chespin using X-Scissors!

Sasuke: What?!

The Scizor suddenly appeared from behind the flames as he attacks Chairo critically using X-Scissors.

Chairo: Argh!

Gary: Arcanine! Go for Wild Charge!

Electricity starts to surround Arcanine before he starts running around the arena until he found Mizu that dug her way out then strikes her away critically.

Mizu: Uaaaa!

Gary: Heh! How's that?! My Pokemon are super amazing, aren't they?

All of the audience starts cheering while Sasuke was looking at his students that was suffering but manage to survive the attack.

Sasuke: His pokemon are much stronger than I thought...

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Meanwhile, Zoroark and Zorua was watching the fight from the audience seat, looking a bit worried.

Zoroark: Oh my, this is not realy going good for him...

Zorua: W-We have to do something!

Zorua looked around before he saw a poffin seller that was walking nearby on the stairs, he notice the seller had a megaphone with him. An idea popped out of his head before he runs towards the seller.

Zorua: Excuse me sir!

Seller: Oh? This Zorua is talking using telepath.

Zorua: May I borrow that megaphone, sir?

Seller: Oh this? Sure, but why—

Without hesitation, Zorua snatch the megaphone and runs back to his seat.

Zorua: Alright, I think you just have to adjust this—

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Sasuke: What now...? If I keep this up, then...

Zorua: SAAAASUUUKEEEE!!!

Zorua was shouting through using the megaphone he has but he adjust it too loud, it screeches and made everyone in the building flinch, even Gary and his pokemon. But it didn't made Sasuke and his pokemon flinch at all. Nobody was able to understand what Zorua was about to say, except Sasuke since he already activated his sharingan.

Zorua: YOU MUST NOT GIVE UP!!! I KNOW YOUR ENEMY SINCE PRETTY TOUGH, BE THINK OUTSIDE THE BOX!! REMEMBER!! YOU'RE DOING THIS FOR THE SAKE OF US!!! FOR ASH!!! PLEASE, YOU HAVE TO WIN!!!

Sasuke: ...Zorua...

Gary: Wh-What's with that pokemon? My ears are ringing too much because of him!

Sasuke observe the enemy again and notice they weren't able to move because of Zorua which clicked an idea in Sasuke's head.

Sasuke: (Thanks, Zorua. Now I finally found the opening I need to attack)

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In the Shinobi World, Pikachu was still surrounded by the giant bubblegums that cornered him against the wall.

Pikachu: (Th-This is bad... If I stay here, all this bubblegums will blow up and defeat me in instant)

But he notice something odd, despite how many bubblegums and how bigger it is, it didn't move closer anymore and it stays still.

Pikachu: Huh? It didn't move?

He starts to observe the surroundings and notice so many gaps around him for him to escape, but it was super slim for him to go through them.

Pikachu: (Ergh! He mocked me that's for sure. He meant to make a really slim gap only to mock how chubby I am...)

Yurui: What's wrong little rodent? Can't get out, can you?

Pikachu: Grhh...

He observes the bubblegums once again and notice the bubblegums besides him didn't touch the wall and it made some really slim gaps.

Pikachu: (Oh, I understand now. He didn't want to pop all these bubblegums, he meant to make me pop them all. Cih! He though I would go panic and made these bubblegums popped, well I'm not exaggerating over this)

But he then sat down while crossing his arms, thinking for a bit.

Pikachu: (But... how am I supposed to get out?)

Meanwhile, everyone was still watching the fight but they are already grew tired because nothing is happening for the past few minutes.

Boruto: I'm bored... why is Pikachu not moving at all?

Shikadai: *Sigh* what a troublesome...

Sylveon: Ash, is Pikachu going to be alright?

Ash: *Smiles* Yeah, as his trainer, I know what he is planning right now.

Suddenly a demon wind shuriken flew out of the gaps that the bubblegums created before it fell down to the ground.

Yurui: A demon wind shuriken? What is this? You're trying to attack me desperately using shuriken? Give me a break—

Suddenly something explode from where Pikachu is and made all the bubblegums explodes rapidly.

Yurui: What the!? What is—

???: Just as I planned.

Yurui looked at who was talking and saw the demon wind shuriken turn back into Pikachu himself.

Yurui: What the?! Since when you—

Pikachu: Heh, easy! All those gaps really fit for a demon wind shuriken to get through, so I turn myself into one and let my shadow clone threw me out of those gaps. Pretty clever for a chubby like me, don't you agree?

Yurui: Wh-Why you...

Sylveon: Hooooray!! Go Pikachu!

Pikachu: Now get ready! Because it's my turn to attack!

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To be continued

https://youtu.be/-LF_XhOdpnQ

Gary: I-It can't be!

Shinki: He moves really quick, even quicker than my sands

Zoroark: Hehe, that was a sneaky move, you sneaky little fox.

Sasuke: You still got more huh?

Next time on "The Missing Pieces: Pokemon and Naruto World"

"Gotta Go Fast!"

Yurui: H-He's fast...