According to Lens:
Splash art text: "There are expressions that can only be seen between a married couple."
Not surprised about Kurenai's comments, honestly. I was wondering if we'd get that sort of thing from her. It's 'nostalgic' because her soul has been here before. I wonder if Nasa would have had a similar feeling if he spent enough time at the Horyu-ji temple back in Nara...
So... what's up with Kaguya, here..? Hm...