Chelsea eagerly looked at her dad, who was enjoying his fresh breakfast. "Aren't my pancakes elegant," she asked. Mark smiled towards his feline chef. "Yes, you did well," he said. Chelsea purred softly and snuggled him. "Wanna snuggle after this," she asked a little playfully. "Sure, since Gin has work to do," said Mark. Chelsea, who enjoys a good snuggle, then stepped into the master bedroom. "We can do it here, hot stuff," she teased as she walked in to change a few clothes. When Mark finished the breakfast Chelsea made for him, he waited patiently for her call. After no longer than 5 minutes, he was noticing the door open. Chelsea, who then peaked outside of her home's bedroom, motioned her father to walk inside. "I am now ready whenever you are," she said, now very excited. Mark then noticed his daughter's clothing; she wore shorts and a sports bra of hers. "Sometimes, I like to exercise with you," she said. Mark looked skeptically. "You're already well-toned, dear," he said. "I know; my feline posture needs work," said Chelsea. "Why," asked Mark.

     Chelsea looked so embarrassed at him. "My breasts make my butt look small," she said. "I think your body shape's still beautiful," said Mark as he gave her a hug. She looked at him feeling happier. "I'm glad that you like me for who I am," responded Chelsea. Mark grinned as she licked him. "You are my favorite cheetah, you know," he said. "And you're my favorite human I know," responded Chelsea. As the two lovers began kissing while also hugging, they heard the door bell ring. "I'll go get it," said Mark. He opened the door, now eye to eye with his older sister. "Good morning, 'Master Mark'," said Raia. Chelsea returned to her room immediately. "She should not see me like this," she thought. She carefully put on a jacket and zipped up. She went to Mark and Raia, who were in the house, talking as they sat at a table. "Good morning, Aunt Raia," called Chelsea. Raia noticed Chelsea, who was now at Mark's side. "Why hello there, Chelsea," she greeted. Mark then cheerfully turned to Chelsea. "Your aunt and I have good news," he said.

     Chelsea's ears twitched as she looked excited at the both of them. Raia shuttered as she felt nervous. "Chelsea, I have some prototype shoes made for exercising," she said. Chelsea looked at Aunt Raia surprised. "Why did you choose me this time," she asked, now feeling confusion. "You are an athlete who's known for outrunning even the most athletic competition," she said. "Well, most cheetahs can move swiftly, but not for long," said Chelsea. "True, but only Mark has outran you in recent months," added Raia as she smiled back at Mark. "So, Mark; perhaps you'll try the prototype pair of shoes," she asked. "I'll pass for now," said Mark. "Why," inquired Raia. "I'm not as athletic as my daughter," he said. Raia looked saddened at her brother. "Well, you don't have to. But, those will be there," she said while pointing at her breasts' cleavage. Chelsea looked sickened right at Raia. "Please, he's my DILF," she said. "Chelsea, he's your father," said Raia. Mark look disappointed at them both.

     "Now you're arguing again," he asked very strictly towards both of them. Raia and Chelsea then lowered their heads to him. "That's more like it," said Mark. "We're so sorry, Master," said Raia, whose head was raised back up. "Very well then. As for you, Chelsea, feel free to try those shoes," offered Mark. Chelsea looked with innocent, cute eyes. "Daddy, I can likely assist you both," she said. Raia smiled at her niece Chelsea. "Thanks for complying, Chelsea," she said. Mark smiled as the women weren't in a conflict. "So, to the lab," he asked. Raia nodded and then walked outside of the house. "OK, I will be driving to the laboratory right now," she said. As she started up her vehicle, she saw Mark and Chelsea teleport and saw that glimpse of them. "Mark, you're so lucky you can teleport. But, it's because you're a semi-god," she thought. But, she'll love Mark, although he is more powerful than she is.

     After some short-lived time to relax, Raia later saw Mark and Chelsea.

"So, are you now ready to see the prototypes?" (Raia brings the prototype shoes' box.)

"Dad, can I please look at the shoes first?"

(He pats Chelsea's head.) "Sure, sweetie; go on ahead."

"Thanks, Dad." (Chelsea looks at the beta running shoes.) "What makes these different, Aunt Raia?"

"The shoes help with perspiration and have been very absorbent of sweat. Plus, maybe you can try outrunning Mark for once." (She purrs as she seductively looks in Mark's eyes.)

"Raia, you know how Chelsea only has short bursts."

"I know that, because cheetahs have strict time limits. Those shoes can, for example, help with feet' sweating. I'd say with a diet that would be nutritious, her bursts' timeline can be extended."

"Fair enough, Aunt Raia. When can I begin a run with them?"

"These two shoes are prototypes, so please be cautious." (She hands the prototypes to Chelsea.) "Those shoes are extras, but they are also rentals."

"Would you recommend I use treadmills?"

"Yes, but probably at slower speeds. You cannot rush short bursts' extending."

"Very well then. Thank you very much, Aunt Raia."

(Mark turns to Chelsea.) "OK, Chelsea; let's go now."

(She frowns and looks at him.) "Can't we possibly have the test in the laboratory?"

(Mark turns toward his elder sister.) "Raia, does this lab happen to have a treadmill?"

"Apparently, it does. I myself exercise since I also have been athletic. It's located in the workout room."

(Mark turns to face both girls.) "I guess like aunt, like niece."

(Raia looks embarrassed.) "Mark, while Chelsea's working out, you and I can have some fun." (She blows a kiss to him.)

"Aunt Raia! That's my Daddy who you're flirting with!" (Mark restrains Chelsea by grabbing her.)

"Chelsea, relax! Your hot temper needs some work, too."

(Chelsea lowers her head.) "Sorry, Dad. I'll be good."

"I hope you're being honest, Chelsea."

As the trio then walked into the workout room, Chelsea felt just a little nervous. "I may feel like a lab rat, but that's since I'll help out," she thought. She started the treadmill as she began to walk. Raia turns over to her brother. "The security camera will track her progress," she said. "Could we watch her," asked Mark. Raia sighed with reluctance to bear. "Fine, we can also see for ourselves," she said. As Mark and Raia sat to track Chelsea's showcase of the prototype shoes in action, they then felt their libido increase. "Mark, can I entertain you a bit," asked Raia. Mark look skeptically. "No, I'm here for Chelsea and to see the prototypes turn out well," he said. Raia then remembered her pregnancy era. Her twin brother Raio, at her side to assist during the childbirth, alongside raising them with her, later Elliot as well. "Mark," she said. "Yes," he said. "Sorry about flirting a couple times earlier. As a mother and parent, I would want to help my 'cubs' in times of need," she said.

     Mark looked happily at his sister. "Thank you for understanding," he said. Their cheeks blushed as they shared the same thought; their brother/sister love. "Mark, please take care of that girl," requested Raia. "What has made you care for her," asked Mark. "She is my only feline niece who's alive right now," she said. Mark understood why she would miss the original Chelsea. "That clone has served as an archival of my first and last daughter," he said. Raia quickly realized what he meant. "That clone's a semi-goddess, unlike the non-clone, isn't she," she asked skeptically. "The god and goddess genes are recessive," said Mark. "You're right; the cloning Chelsea has them," he added. Raia looked so confused at Chelsea. "Why would she probably act like a mortal right now," she asked. "Chelsea is used to living like one," he answered. "I guess she's semi-mortal as well, too," she thought.

     After an hour of the testing, Chelsea returned the shoes to Raia, who watched with Mark and wrote a couple statistics. "Here ya go, Aunt," she said. Raia smiled as her niece returned "the rental prototypes". "So, did my favorite niece get to enjoy those shoes," she asked. "Yes, I felt a tighter connection and grip to use," responded Chelsea. Raia looked uncertain, but came up with a scenario. "Those shoes were possibly a bit smaller," she said. Raia reevaluated her notes she wrote. "The short bursts' extensions can be likely," she said. Chelsea felt her feet get ticklish. After a rather short while, the ticklish feeling stopped. "Dad, I think we can go now," she said. Mark and Chelsea waved farewell to their friend Raia.