When 9S leans closer, 2B turns her head slightly away. She doesn't want 9S to look too closely -- like he could look into her and see the feelings she hides away -- but she doesn't want to close herself off from him completely.

I see.

She turns her gaze skywards. The sun is only beginning to sink, painting the sky with vivid oranges.

Did the records say why humans watched the sunset in pairs?