Step Sister Looking to Practice Self Defense Moves Part 2

Candy told Derek to get up and sit at the end of the couch. He slowly got up as any movement hurt. She plopped her feet in his lap a little hard. She watched him wince as she giggled. She started massaging his lap with the soles and toes of her bare feet. She could see the pleasure in his eyes and told him "Take it out". Derek couldn't believe his ears and did as he was told. She went and grabbed some oil and rubbed it on her gorgeous feet and started massaging his dick. He had never felt anything so good.
Once she realized he was getting close to the point of return she cutely said "Derek, I'll make you come harder than you ever have right now, but you have to spar with me and let me practice my self-defense moves some more." He was in such ecstasy he said "sure, anything you want" as he came harder than he believed any man ever could. He said "Candy, you can do anything you want with me after that. Your feet work wonders."
Candy let him enjoy his time and after a half hour told him it was time to practice. He didn't even mind he was so relaxed until right after he stood up, he saw the flash of her black yoga pants with her beautiful foot swing forward with a flash or bright red from her pedicured toes. She had a vicious smile on her face as she connected with his poor nuts and for him it felt like the end of her toes cradled them and escorted them into his pelvic bone crushing them badly.
She could see the shock in his eyes, followed by the knowing of defeat and the fear of "oh know this girl really just kicked me in the balls so hard that there could be real damage", then to total agony and then no thought as he cupped his balls like it was the last thing he'd ever do. Derek slowly toppled over and rocked back and forth with tears pouring out of his eyes. He was trying to talk but it was just mumbles and sobbing and crying. Candy looked down at him and as she laughed said "I guess I'm getting really good at this self-defense stuff. Oh my, I just got my next tattoo idea. I'm going to get crushed nuts on the very tops of my middle 3 toes on my right foot. All summer when I'm barefoot you'll be able to see your, I mean crushed nuts," as she laughed at him humiliating him at the same time. He heard her and was emasculated but the pain was worse and getting worse by the minute and he passed out a few seconds later.
Candy thought the whole thing was funny and empowering that she could take down a guy and destroy him like this so badly. She started to get worried and thought "oh no, did I kick his nuts so hard that I killed him." Then she looked down at her bare feet and wiggled her toes and thought "at least I didn't kick him with high heels" and laughed. She felt for a pulse and thankfully found one. She wanted to wake him up before she left to make sure he could get home ok. She dumped a cup of water on him. Derek shot up and looked around surprised then grabbed his balls and fell over to the side and threw up. Candy asked, "are you going to be able to make it home, ok?" He looked up and nodded yes. She said "Ok, call me later and let me know how your nuts are doing." She got on her flip flops and bent down and gave Derek a kiss on the cheek. On the way out she said "Thank you for the practice. I know they hurt a lot but they'll be ok. I didn't feel them burst against my toesies. I still want to be able to practice on your again soon." Candy could see the look of terror in his face. He figured, I might as well get something out of it and shouted as she was walking out the door, "You owe me a foot job at least, maybe a BJ." She turns and goes "sweetie, if you let me practice again, I'll start you off with the best footjob you've ever had, and I'll let you finish in my mouth and suck it all down to where you think you had 5 orgasms in a row.