Zen let Nina reach the beach before her but during the time they both ran there she was about to quit as the beach was a little far from the graveyard as compare to Zen's house, which resulted in him running a long way too.
But it was not in vain as everyday is a part of training to improve.
After reaching the beach Nina was trying to catch her breath, Siya had no problem coming there as she was on Zen's back the whole time.
As Zen looked around and told Nina to sit down and start controlling her aura flow.
As Nina was still trying to get over the long run, Zen was not giving her even a small chance to take some rest.
As Nina looked at Zen and he was already doing it, as she was surprised that the long they both did was nothing for him and he was all ready to even do more.
She taking inspiration from him, sat down too as she started concentrating on her aura flow.