You Remind Me Of Your Mother

Hakoda sighed as he relaxed in the warm water. With a smile on his face and eyes closed, he laid back without a care in the world. He slightly opened them and saw Kya smiling at him. 
"Kya," he whispered.
"Are you awake, Dad?" Katara asked, snapping her Dad back to reality.
"Oh-" *sits up straight* "-hello, Katara. What are you doing here?"
"Just thought I'd stop by and spend a little down time with my Dad. Mind if I join you?"
"Not at all."
Katara removed her clothes but left her undergarments in tack as she slowly but surely stepped into the warm pool. 
"So," Hakoda began, "what's Aang been up to?"
"Meditating mostly," Katara answered, "but today he and I decided to hang out."
"Tell me about it."
"Well, first we took a walk across the beach and talked about some of our craziest adventures together. Then we went shopping where we got some groceries and then saw a guy shouting about how "the future is doomed," and couldn't help but laugh."
"<chuckles> How did he know the future is doomed if it hasn't happened yet?"
"That's what I asked him and you wanna know what he said?"
"What?"
"A sheep told him!"
They both started laughing almost immediately after she said that. They laughed for almost a minute before taking a breath.
"What was this guy's problem?" Hakoda asked.
"He was crazy," Katara said.
"I suppose he was."
"Anyway, Aang and I then got back home and cuddled for a bit before he went back to meditate."
"Cuddled, huh? That's a nice way of putting it."
"What do you-" *blushes* "-it sounds dirty if I flat out said it."
"<chuckles> I understand, your mother was the same way."
"Speaking of which, when I walked in, I think you called me Kya; is that right?"
"Yes."
"You must really miss her."
"I do, but in a way I feel she's still here because of you."
Katara flashed a bright smile as she slid over to hug her Dad. As he held her, he rubbed his fingers through her hair before she placed a kiss on his cheek. She gently placed her hand on his lap and felt his erected penis, much to his surprise.
"Wanna cuddle?" she asked.
"Of course," he replied.
She then undid her bra and sat on Hakoda's lap before opening her underwear, exposing her vagina. She then guided his penis to her vaginal lips and cooed as she shoved it inside her. She laid her hands on his shoulders as she steadily humped his erect penis.
He grunted in sync with her moans as he wrapped his arms around her body. The steamy water splashed as she humped his penis, all the while her breasts were bouncing. 
She started humping faster as she was nearing orgasm, with her voice starting to get louder with excitement. As his voice became louder, he grabbed her ass and squeezed her cheeks. They cried out as they both came, with Katara shuttering as she laid on top of Hakoda, panting. They rested for a moment as the water began to settle and they managed to catch their breath.
"Dad, I lov-" Katara began before Hakoda placed a finger on her lips.
"I know, Katara," he said with a blissful smile, "I know."