In what game does kairi and sora kiss cause i found a picture of them kissing but is it in kh1 kh2 or kh3?

As of now they haven't kissed. The closest they came was in KH2 when they hugged each other very lovingly. Fanart is probably what that image is but as I couldn't get the link correctly I can't be 100% sure. People want to see them together so they either draw it or have other people draw it for them.