Sunbeam Lair from what i understand

Their tails whipped in tandem, or near enough. Several times their tails met in the middle, smacking together painlessly and then coming apart. Shiori found that she quite enjoyed having Kaori share her stick with her, then they could both have fun!

Shiori delighted in the sound of her name, though her sister's pronunciation was less exact than her mother's. Good! cried the hatchling. She leaned over and pressed her nose against her sister's cheek affectionately, then giggled playfully. Kooooori she sing-songed.