Place it at the end of a transformation or reveal sequence, right where the new look appears, then follow it with Okay Let's Go to move straight into the next scene. For an anime-style edit, open with Ara Ara before the reveal to set up the contrast.
About this sound
This 16-second Persona 4 voice clip catches Teddie in a burst of triumphant excitement as he celebrates finally having a real body, with his loud, joyful OH YEAH! carrying the whole moment. It feels gleeful, goofy and unexpectedly heartfelt, like a cartoon sidekick getting his big win. The line comes from Persona 4, where Teddie's transformation is a memorable turning point for the character.