Place it at the very end of a scene, after the main action has finished, so it works as a final beat before the cut. Follow it with a shocked sound for the other character's reaction, then a playful laugh to close the moment.
About this sound
This nine-second clip delivers the line “oh and one more thing” in a soft, sweet kawaii voice, stretched out with a playful, teasing lilt. It feels light, flirty and a little mischievous, like a cute afterthought slipped in just as someone is about to leave. The delivery makes a simple reminder sound affectionate rather than demanding, turning an ordinary closing line into a charming little moment.