In the shinobi world, Ash and Naruto was at the training field to finish the last session of the rasengan technique.

Naruto : Alright, this last training will be difficult.

Ash : Alright, I'm listening.

Naruto pull out a regular balloon and blow it in, then gave it to Ash.

Ash : What's this for ?

Naruto : This is the last session of training.

Ash : After all I went throught, the last training was only to pop this air balloon ?

Naruto : Nope, this one is different. You must combine what you've learn before with this balloon, without popping it.

Ash : Without popping it ? That sounds hard.

Ash tries to combine what he have learn before but the results is the balloon popped.

Ash tries again and again but the balloon keep popped.

Ash : Naruto, why do I have to do this ? I've tried rotate my chakra and power it up, shouldn't that be enough to make a rasengan ?

Naruto : No, let me show you what I meant about all of the training session that you've been throught.

Naruto walked in front a tree and summons a undone rasengan in his hand.

Naruto : In the last session, you've learn to rotate your chakra.

Naruto put the rasengan at the tree but it only leaving a ordinary rotating scratch at the tree.

Ash : Wow.

Naruto : And you've learn to power up your chakra inside the rotation.

He tries to power up the rotation but the results is the rasengan blows in a flash.

Ash : Huh ?! What happened ?

Naruto : Well that's the reason for your last training session.

Ash : Huh ?

Naruto : You must keep the rotation in shape so that your chakra can't flew away. It's like you're making a barrier for the rasengan so it's keep shaped like a sphere.

Naruto summons a well shaped sphere rasengan on his hand and Ash realize there were a chakra that cover around it like it keeps it in shape.

Ash : So the chakra around the rasengan...

Naruto : Yes, it's the one that keep the rasengan in shape. And you will get this.

Naruto put the rasengan on the same tree and the results the rasengan blew the tree away.

Ash : Wow, that is so cool !!

Naruto : So you maintain balance so that the chakra won't flew away.

Ash : Wait, let me try.

Ash made a rasengan on his own without the chakra around it that made the rasengan blows.

Ash : Oh dang it.

Naruto : Try and make the chakra around it like I do.

Ash : Let me try it.

Ash tries to make the chakra around the rasengan so it's stays in shape, but the chakra doesn't stay in well shaped and the rasengan blows away again.

Ash : Oh dang it, I thought that work.

Naruto : That's the reason of the last training, it is to keep the rasengan in shape, can you do that ?

Ash : Alright, I'll try.

Naruto : Good. *Give a bag of balloon* I'll be waiting more from you, bye. *Dissapered*

Ash : Alright, I will never give up.

Ash blows another balloon and tries again the training session.

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In the pokémon world, Sasuke and Mianna was at the side of a hill to keep finding the ruins.

Mianna : You think the ruins is this way Sasuke ?

Sasuke : I'm sure, just pass this hill. Or do you want to climb this hill ?

Mianna : No, thank you.

Suddenly a bone was flying towards Mianna, but Sasuke manage to catch it in time before it hits Mianna.

Mianna : Wow, that was a close one.

Sasuke : Luckliy this sharingan doesn't deactivate.

Mianna : Thanks Sasuke.

Sasuke : We must find whoever did this. *Deactivate his sharingan and rinnegan*

Sasuke and Mianna found that a trainer was practicing her Lucario, the trainer look like a blonde haired rather active girl.

Sasuke : Hm ? Who's that ?

Mianna : Let me talk to her.

Sasuke : Good idea.

Mianna walked towards the girl and she notice her outcome.

??? : Oh hello there, who are you ? I've never seen someone like you here.

Mianna : I'm Mianna, your Lucario almost hit me with his bone.

??? : Oops, sorry if it suprise you. I'm Korrina by the way, we're having a training here you know.

Mianna : Don't worry, it doesn't hit me, thanks to him. *Pointed back with her thumb*

Korrina saw from the distance is Sasuke that walked out from the bushes.

Korrina : Wow, you have a Lucario too ? That's so cool.

Mianna : Wait, he isn't...

Sasuke : No, I'm not Mianna's Lucario.

Korrina : Wow, the Lucario can talk ? That's so cool !!

Sasuke : I'm Sasuke Uchiha, I'm just someone who turned into a Lucario.

Korrina : So cool, hey can you guys do me a favor ?

Mianna : Sure, what do you want ?

Korrina : Hey Lucario, I have a training partner for you.

Lucario : Really ?

Sasuke : Huh ?

Mianna : You want me to train your Lucario ?

Korrina : Yeah, and Sasuke might be interested. What do you think Sasuke ?

Sasuke : Uhh... alright.

Korrina : Good, let's get ready.

Sasuke and Korrina's Lucario prepared to start their training.

Sasuke : I hope you're ready.

Lucario : Oh I will, this'll be a promising fight.

Korrina : Alright. Lucario, use...

Mianna : *Stops Korrina* Wait, let them do this freely, they need to improve their power don't you think ?

Korrina : You're right, go Lucario !!

Sasuke put down his weapon bag and sword from his pants and release his cloak.

Korrina : Wow, that's some casual gray clothes that he's wearing.

Mianna : He was a human, you know.

Korrina : Oh yeah.

Sasuke : Let's go.

Lucario : Alright.

Lucario starts by using bone rush and throws some bones towards Sasuke.

Sasuke : I can see it.

Sasuke activate his sharingan and rinnegan then avoiding the bones by easily walked to an opening where the bones doesn't flew throught.

Korrina : Huh ? How could he simply dodge that ? That attack is undodgeable.

Mianna : Look at his eyes.

Korrina : Huh ? *Looked at Sasuke's eyes* W-What happened to his eyes ? That eyes looks very digusting.

Mianna : That power allow him to look throught and read enemy's attack.

Korrina : Wow, that's so powerful. (Lucario must be careful if there is an enemy like that)

Lucario : (I have to be careful, he can look throught my attack) How about this ?

Lucario uses swords dance and flew all of the swords towards Sasuke.

Lucario : This'll finish this.

Sasuke : This is exactly what I need.

Sasuke take one of the sword from the attack and block the others with the sword that he is holding.

Sasuke : Now it's my turn. *Teleports behind Lucario*

Lucario : This is bad. *Punches behind*

Sasuke easily teleports away from Lucario and attack Lucario with his swords without him seeing him that made a lot of scratches.

Sasuke : *Teleports behind Lucario again* I can see it, here.

Sasuke punches Lucario from behind with his sword's handle, but Lucario simply block it with his forearm.

Lucario : Almost.

Sasuke : Not quite.

Lucario saw Sasuke's hand was going to throw the sword behind at him, but he simply bent down to dodge it.

Lucario : That was...

Sasuke : Think again !!

Sasuke turn around and kicked away Lucario when he bent down and the sword dissappeared.

Lucario : Ouch. *Hold his nose* I didn't see that coming.

Korrina : He's fast, I don't think Lucario can keep up.

Mianna : You should be careful thought, Sasuke is crazy fast even for me.

Korrina : (In this case, I have no choice) Lucario, mega evolve now !!

Mianna : Huh ? Wait !!

Lucario : Alright !!

Lucario started to shine and turn into a Mega Lucario.

Lucario : Oh yeah !!

Korrina : Good work Lucario !! Now go and defeat him !!

Mianna : (This is bad, Sasuke didn't learn how to mega evolve yet)

Lucario : Hey c'mon !! Try and mega evolve !! I want this fight to be fun !!

Sasuke : I don't need to, I've already got the power I needed to defeat you.

Lucario : Fine then, show me what you can do !!

Sasuke activate his mangekyo sharingan and his rinne-sharingan then summons a long bone on his hand.

Korrina : Wait, his eyes changes. What happened ?

Mianna : He's... powering up his eyes !!

Korrina : That's bad.

Lucario : Heh, even if you changes your eyes, you can't defeat a mega evolution like me. *Charging his aura sphere*

Sasuke : Don't understimate your opponent... *Put the tip of the bone on his palm* No matter how weak they wwa be.

Suddenly Sasuke push throught the bone into his palm that letting a lot of blood coming out from his palm.

Lucario : What ? What are you doing ?

Korrina : His palm... is he out of his mind ?

Mianna : Nope, he's been throught this one before.

Sasuke : This pain... will make me stronger !!

Sasuke grab the bone using his pierced palm and it creates a scythe when he pulled it and let go.

Sasuke : Now then. *Panting and points his scythe at Lucario* Let's end this once and for all.

Lucario : (If he can handle that much pain, then my attack might won't work on him. I must try) How about this ? *Throw his aura sphere at Sasuke*

When the aura sphere hits Sasuke's scythe, the sphere suddenly evaporates from existence.

Lucario : What ? But...

Sasuke : Let's end this.

Sasuke walked a little then teleports in front of him and hits Lucario's chin with the scythe's handle.

Lucario : (What ? Since when...)

Then Sasuke uses spinning kick at Lucario 3 times and send him flying.

Lucario : Argh !!

When he was about to land on his head, Sasuke teleports again in front of where he would land at and saw him slowly falling.

Sasuke : Hyaa !!

Sasuke punches Lucario on his stomatch and send him away and hits a tree behind Korrina and Mianna.

Korrina : Lucario !!

Mianna : Wow.

Korrina runs towards Lucario and realize that Lucario already got knocked out by the attack.

Korrina : N-No way, he lose with just one hit ?

Mianna : Alright Sasuke !!

Sasuke put back his weapons at his pants and put on his cloak again.

Sasuke : That was a good fight, too bad it didn't last long.

Korrina : That was a great fight, looks like Lucario doesn't have any regrets at all. *Returns Lucario into his pokéball*

Sasuke : Let's fight again when you have time.

Korrina : We will, see ya.

Korrina leave the place and Sasuke and Korrina continue their journey back to find the ruins.

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In the shinobo world, Pikachu and Sai was at the Memorial Stone finishing Pikachu's sword skill training.

Sai : Good work Pikachu, I think that's enough for me to teach you.

Pikachu : Pika ? (Really ?)

Sai : Yeah, you've done well so it's enough from me. And oh yeah, remember to take care of the blade, okay ?

Pikachu : Pikachu !! (I will !!)

Sai : Alright, that's all for now, dismiss !!
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Meanwhile at the Hidden Leaf Hospital, Sakura and Sylveon were finished training.

Sakura : You've done a lot good now, I think that's all for now from me.

Sylveon : Sylvie ? (Really ?)

Sakura : Yeah, you've now officially a medical ninja now, promise to take care of your comrades one day.

Sylveon : Sylveon !! (Alright !!)

Sakura : Good, dismiss !!
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Meanwhile, Ash was still at the training field trying to finish the last training session.

Ash : C'mon Ash, you can do it !!

He tries again to focusing his chakra in the balloon, but once again it popped.

Ash : Oh dang it !! No Ash, you musn't give up now !! Let's continue this !!
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Meanwhile at the Hokage Room, Naruto was finishing the files that he recieve this morning.

Naruto : Man, so many work !! When will this finish ?

Shikamaru : *Came in* Hey Naruto, you want me to help you finish those files ?

Naruto : That would be good, thanks.
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One hour later, Naruto and Shikamaru finish all of the files in time.

Naruto : Fyuuh... that was a lot of work, luckily you came to finish this in time.

Shikamaru : Yeah, I rather came here help you rather get mad by my wife again.

Naruto : Man, she must be a bothersome for you.

Shikamaru : You can say that again.

Naruto saw his team old photo on his desk and remember about Ash's team.

Naruto : Hey Shikamaru, can you check the mission status that we recieved just this morning ?

Shikamaru : Huh ? What for ?

Naruto : I need to find a mission for Ash's team, can you do that for me ?

Shikamaru : *Sigh* Alright, give me a second.

Shikamaru checked all of the mission status and found something interesting.

Shikamaru : Hmm...

Naruto : Do you think there is any mission for the three of them ?

Shikamaru : Yep, found one.

Naruto : Really ?

Shikamaru : Yeah, it's a B rank mission, their mission is to brought back the anbu supplies from the rob ninjas just outside Hidden Leaf.

Naruto : That should work for them, besides, they are improving their skills right now so it's going to be okay.

Shikamaru : But...

Naruto : What's wrong ?

Shikamaru : This mission is 8 mans job, so you need 2 teams for this.

Naruto : I see, maybe we can put my son's team into this mission.

Shikamaru : You sure ?

Naruto : Yeah, even if my son and Ash doesn't get along very well since they are rival, but they need to become closer as friends.

Shikamaru : I see your point, since they doesn't have anything to do, so this mission should work fine for them.

Naruto : Yeah, when will this mission start ?

Shikamaru : This mission will start two days later.

Naruto : Alright, I'll summons them tomorrow and get the mission start afterwards.

Shikamaru : Good idea.

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In the pokémon world, Sasuke and Mianna was resting a bit to let their pokémon play.

Mianna : So Sasuke, when do you think Yuri will come ?

Sasuke : I don't know, maybe next month or so. I just hoped it doesn't take too long.

Shiro : Umm... Master Sasuke ?

Mianna : You're right, the league might be long, but we can't waste any more time.

Shiro : Master Sasuke ?

Sasuke : Yeah, and with this Uchiha Ruins as well, it'll waste more time than how many times we needed to prepare the league.

Shiro : Master Sasuke !!

Sasuke : Shiro ? What's wrong ?

Shiro : I think tomorrow is the day where Yuri will come to us

Sasuke : How could you be so sure she will come to us tomorrow ?

Mianna : Wait really ?

Shiro : Tomorrow is Mating Season, so she will come to Master Sasuke when she is in a heat and find Master Sasuke to ask you to be her mate.

Sasuke : 0///0 Mating Season ? I never heard that before.

Mianna : Mating Season ?

Sasuke : Shiro said that Yuri will come to us when Mating Season started and ask me to be her mate.

Mianna : *Checked her phone* No, Mating Season is two days later, not tomorrow.

Sasuke : Oh, but what exactly is Mating Season ?

Mianna : It's where all pokémon started to find another pokemon for them to be mate with.

Sasuke : Wait, all of them ?

Mianna : Well not all of it, but mostly there will be a lot pokémon mating around this place soon.

Sasuke : Oh man, I can't imagine seeing someone or maybe everyone mates in the open.

Mianna : Well I can imagine that.

Sasuke : *Looking at Mianna suspiciously*

Mianna : What ?

Sasuke : Whatever, but what's important is for me to get my body back and that's it.

Mianna : You're right, but do you think you're ready for it ?

Sasuke : I've already married, but if cheating on her is the only way to return me back, then I don't mind.

Mianna : I see, but what about your pokémon ? Is it okay for them to be mating ?

Sasuke : Not yet, they can mate and have a family when I'm already return to my world.

Mianna : Wait, does that mean you...

Shiro : Master Sasuke ?

Sasuke : *Kicked Shiro away* Sorry !! Yes, I will let go of them when I'm return.

Mianna : That's sad, but do you think they'll be fine without you ?

Sasuke : When they finally made a family and can protect themselve, they'll be fine.

Mianna : I hope so, it'll be sad to see you left this world and they will to.

Sasuke : Don't worry, they'll be fine and you too. *Stands up*

Mianna : Where are you going ?

Sasuke : I need to train my pokémon to control their lust so they don't mate until the right time, it'll be for train their emotions.

Mianna : You're right.

Sasuke : How about your pokémon ?

Mianna : I don't mind if they mate or not.

Sasuke : Alright then.

Sasuke started to train their pokémon to control their lust for the mating season that will come.

To be continued

Mianna : Wow, so many pokémon mating, it's really awesome.

Boruto : Why do I have to team up with him ?!!

Mituski : Can I have a little blood from you two?

Sasuke : Explain to me first, why did you put a curse on us ?

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

"Mating Season and New Mission"

Yuri : Yes Daddy, I wanted your seeds, please put it inside of me.