So the way this is going to work is that I'll write different One-shots depicting Chekov/Joanna. A large majority will be them meeting in different universes and getting together in some. If you want me to write a continuation of one of the stories, message me and I will. Also, I know their age difference isn't canon, but a ridiculous age difference makes me a bit uncomfortable. So, without further to do, on with the Fanfic.
It was supposed to be an easy mission; beam down, figure out why the newly inhabited asteroid that wasn't returning transmissions, fix said transmissions, go back to the Enterprise and sleep. Easy, right? Wrong. Some form of virus had infected the colonies and made them go rabid, trying to kill everyone in sight. The phasers did nothing, and they had already lost a man from engineering, the group (Jim, Spock, Chekov, and McCoy) started to run. Chekov was fairly certain that they were going become food for these people, when someone grabbed him and pulled him into an opening that would've been invisible to a naked eye and slammed their hand over his mouth. He struggled for minute until the person whispered "Shh, you're gonna get us killed." In a slight drawl. He relaxed in her (?) arms until the creatures passed by, she released Chekov and he turned around to see a woman wearing a black scarf over her mouth and a black hood so the only visible part of her was her eyes, which were a striking blue. Her aforementioned eyes flicked to the badge on his chest, "Are you Starfleet." She asked looking eager yet distrustful "Yes," Chekov responded "Ensign Chekov, of the USS Enterprise." The woman's eyes widened and her eyebrow arched in a very familiar way "The Enterprise?" "Yes, do you know of it?" Chekov asked curiously. The woman shook her head and closed her eyes, Chekov was going question her more until he heard "Chekov?" come from the outside of the small enclosure. The two of them left the crevice and saw the complete landing party (except the red shirted engineer) unscathed, all of them was accompanied of about five other hooded people, all of whom started to pull of their hoods and scarves. "Orders, J?" asked one man who looked at the woman who had grabbed Chekov "They're Starfleet." The woman stated, "How do you know?" asked another woman, who Chekov's savior looked at for a minute until the woman backed down. "Because," the young woman said, while her eyes looked over each of the Enterprise crew members "I'd know my father anywhere." She accentuated the statement by taking of her hood and pulling her scarf down. And their stood a 20 year old, pretty, woman version of Dr. Leonard McCoy.
Chekov had met Joanna once before, right after the Narada incident. She had come to visit her dad, and had been 14 to his 17. When he met her he had talked to her for about ten minutes while Dr. McCoy finished a bit of paperwork, she had mentioned that she had a liking for combat and that she was AP student. All in all, she had been a cute kid, nothing like the young woman who had led them to the survivor's base and ordered around the people there with complete ease. She'd also got hot, like, really hot, Like, Jim was about to get punched by McCoy if he didn't stop his wandering eyes. "What is going on around here?" Jim asked Joanna, who looked very unhappy and held up her hand to say "One minute." She then plastered a smile on her face and grabbed a beer and passed it to a young man who had been leaning on a desk. "You did good out there." She said, while the man smiled, popped open his beer and took a swig. Then Joanna shot him, with an old bullet handgun, the whole Enterprise party jumped and their eyes' widened, "WHAT THE HELL WAS THAT?" McCoy exploded, looking at his daughter in utter shock. "He was gonna change, she did him a favor." Said a man while he worked on dragging the man out of the small building, "How were you sure?" Jim demanded "I've been around these things for over a year, Captain, I know when someone is about to change." Joanna said, not even trying to hide her malice. "Now that you're here, you can get us out of this hell-hole." Joanna said, when Jim didn't say anything "Right?" "Right." Jim said looking a little frightened.
By the time all the survivors were brought on board, treated if needed in the med-bay and were given rooms; Chekov's shift was over, as he headed back to his bunk, feeling rather tired, he ran right into Joanna who stumbled, muttered sorry and rushed past him. Before she got far Chekov called after her "Are you okay?" Joanna turned around and smiled said "I'm fine." "You're a bad liar." Chekov said, "Would you want to come in?" Joanna looked at him distrustfully, until Chekov huffed "If I were to try anything, I'm completely sure you could have me down for the count." Joanna chuckled, a little watery, and shrugged her shoulders as if to say "That's true." And she went into his room to get some much needed comfort.