Place it just before the door opens in your edit, then follow the entry with Kids Cheering once the person is inside. If the entry is into a call or server instead, use Discord Join right after it to mark the arrival.
このサウンドについて
This is a short Portuguese voice clip built around the repeated urging 'vai, vai, entra'. The delivery is quick, insistent and playful, like someone cheering a hesitant friend through a doorway. It lands as funny and motivating at once, turning a small moment of hesitation into a nudge to act.