Just watched the RAW of this and while I couldn't understand the plot points the emotion behind this episode still completely worked for me even without the dialogue.
Not only will Kaiba most likely win for the best anime of the year for me after this episode it will probably win the best romance of the year too. It was just adorable and you could tell how much the characters loved each other. And I am still squeeing. Forget Macross and their ridiculous love triangles this is how you write romance. Just watching the pure unaltered joy these characters had when they were near each other that is love. Or just watching the extent they would go to save the other...that is love. And again all this came across without the dialog for me. ♥