Savior of pokemon(Rosax male team plasma reader)

The Halloween party+A surprise

It has been a few months since N had been found. Y/n and Rosa had been really happy and gone a few dates with each other. N has now opened a sanctuary for abandoned pokemon which is now very successful. Y/n has had lots of world coronation battles and has risen to the the top 100 at rank #50. Now he is training with his pokemon at his house.
Y/n:Masquerade use night daze, Keldeo use Secret sword!
The two attacks collided causing a huge shockwave. His other pokemon were watching when Rosa came in with her usual cheery expression.
Rosa:Hey Y/n!
Y/n:Huh, what is it Rosa?
Rosa:Look at this.
She hands him an envelope which he opens and it reads.

Dear Champion Y/n and elite four member Rosa,
You have been invited to a Halloween party which will be occurring at my old castle or otherwise known as the pokemon sanctuary. You will be expected to be wearing a type of costume as well be prepared as there will be a royal dance for the members of the pokemon league. Please accept this invitation and I hope to see you there.
Sincerely, N

Y/n slowly looks towards Rosa as he knows what to expect. He sees his girlfriend shaking with excitement as the next minute she immediately returns all of their pokemon and starts to drag him to all of the shops with Halloween costumes.

5 hours later

Y/n is now waiting in his living room with his costume on as he is waiting for Rosa ro be finished dressing up.

Y/n:I wonder why Rosa insisted on me buying this costume.
As he says this Rosa walks down the stairs ready to go.
Rosa:OK babe! Check me out!
He looks up to see his beautiful girlfriend in a cute costume that made him blush profusely.

Y/n:You look very gorgeous.
Rosa:Thanks now let's go!
They get onto Ace as they fly over to the pokemon Sanctuary. After about 20 minutes of travelling they arrive at the castle to see N, Hugh, Nate and Bianca all outside the Palace.

N:Welcome to the Halloween party ! I am glad that you all could make it today!
Rosa:Of course we would. We all love Halloween!
N:Haha well anyway let's head inside.
As they enter they see a large ballroom with lingering ghost type pokemon in the area. Afterwards all the invited guests join the party and they all begin to just have fun. Nate and Hugh are having a friendly contest to see who can drink the most punch which in the end Nate is able to win. Bianca is playing some of the mini games such as a game where they have to get a ring around a pole but the Litwick is moving it. During this Rosa and Y/n are both hanging out at the balcony where they are looking at the beautiful view.
Rosa:This is so beautiful.
Y/n:Well it isn't as beautiful as you.
Rosa blushes at this comment as Y/n continues.
Y/n:Rosa, ever since I met you myself has been filled with so much joy and I could never imagine it with out you. Your cheerful expression, your jolly attitude and your beauty as a whole. It just always makes me smile.
He then begins to crouch down as Rosa covers her mouth in shock.
Y/n:Rosa will you please make me the happiest man in the world and marry me?
Rosa is crying tears of joy as she gazes onto the ring that Y/n is holding.

Rosa needed no second for her second.
Rosa:Yes! Yes I will marry you!
Y/n smiles as he places the ring on her finger as the two of them kiss under the Moonlight. They then go back into the ballroom to tell everyone about their engagement as everyone congratulates them and they continue on with the party. That was when N walked up to the pedestal.
N:I wanted to now start the grand dance. So please partner up with somebody to dance with.
Nate dances with Bianca, Hugh dances with Shantal and of course the newly engaged couple dance together. Everyone makes space for the pair as they dance in the center.
Rosa:I love you.
Y/n:I love you too.