Frostweaver's edit said:
-you may use any narrative manner, from any characters' perspective, or change the narrative to script
Ya don't say. Well, then... sorry if it's a bit lengthy. This is done in my usual style, scripted, faux transliterion, etc. And just in case no one's aware, Alligates=Croconaw.
Alligates: "ARIGE...!" [Flies backwards and gets imbedded into a stadium wall. Her eyes are shut.]
Joshua: [Steps forward, mouth gaping.] "Alligates!"
Alligates: "...ei..." [Falls to the ground.]
Referee: [Leans towards Alligates, observes for a moment, then holds up a flag.] "Alligates, unable to battle!"
[A silhouetted figure standing at the other side of the arena holds up a Monster Ball and uses a retrieval beam to return whatever Pokemon was battling against Alligates.]
Announcer: "Player Joshua is out! So, this year's tournament champion is...!"
Joshua: [Mouth still gaping. Stares wide-eyed at the arena.] "I..." [Collapses to knees.] "...lost?" [Lowers head and gets on his hands.]
[Over in the stadium stands, a small group of people are climbing over the railing into the arena. The group contains Joshua's friends, as well as a middle-aged couple, his parents.]
Friend: "Hey, Josh!" [Jumps down from the railing and runs towards Joshua.]
Alligates: "...arigeeeei..." [Slowly opens eye as the group runs past her towards Joshua. One of his friends, meanwhile, kneels down next to her.]
Mother: [Stops running and kneels down by Joshua.] "Joshua...?" [Puts hand against his shoulder.]
Father: "Are you alright?"
Joshua: "....gi...gi..." [Teeth and eyes clenched, body trembling. A couple tears roll off his face and onto the ground.] "Dammit!" [Punches the ground where the tears landed. His mother pulls her hand away in shock, then slowly puts it back on his shoulder as his body stops trembling.] "...so close... I... was so close. My hopes and dreams are..."
Father: "Don't say that!"
Mother: "That's right. You did your best."
Joshua: "Did my best...?" [Unclenches fist and spreads fingers across the ground. Lifts up head and calmly opens eyes.]
[Joshua's friend that knelt down next to Alligates is currently helping her up. She manages to stand back up, but holding her injured shoulder with her other hand. Someone suddenly shouts...]
???: "Nii-chan!"
[Joshua turns his head shortly before a little girl, his sister, runs up, jumps up to him while wrapping her arms around his neck, and hugs him. His mother immediately pulls her hand away and stands up after a moment. Joshua looks down at the girl confusedly.]
Sister: "Nii-chan's so cool! You placed second in the whole tournament!"
Joshua: [Widens eyes.] "Ah...?"
Sister: "You'll get first place some day, for sure!"
Joshua: [Looks down at his sister for a moment, then nods head.] "Yeah..." [Wraps hands around his sister's back.] "For sure."
[Joshua looks around him. One of his friends smiles and gives him a thumb-up. His father stands beside his mother, who's smiling and trying to wipe tears swelling up in her eyes, and has his hand on her shoulder. He too smiles towards his son.]
Alligates: [Slowly walks towards her trainer, still clenching shoulder. Stops in front of him and looks up at his face.] "Arigei." [Grins and nods toward him.]
[Joshua lets go of his sister, who stands up and backs away from her brother, and then leans towards his Pokemon to rub her chin.]
Alligates: [Closes eyes and purrs in enjoyment.] "Riiiii..."
[The sound of footsteps approach. Joshua stops, and everyone looks up to see the silhouetted trainer, who holds its hand out toward Joshua. Joshua stands up, looks at his former opponent, and slowly brings his hand towards the champion's while smirking. As soon as the hands meet, an outward view of the stadium is shown.]
Joshua (narration): "That's right... some day, I'll surely win. It's a promise."