You were at the beach with all the female soul reapers, even, yoruichi. Nelliel was there too, the "little girl" you protected and saved in heuco mundo, well that was until she transformed in an attractive grown woman and protected YOU. It was ironic really.

all the other soul reapers were having fun in the water or tanning. Not nelliel though, she stayed right by your side, behind your chair leaning over it and looking down at you with a bright smile, she was kicking one of her feet in the sand, she still had that playful nature after all these months

Nelliel: "What're you going to do? Are you gonna stay here or go in the water?"