Ichigo licking Zero two story (Pixiv Fanbox)

This story is to accompany the art of Ichigo licking Zero two's butthole (210219). To Ichigo's dismay, she was next on the roster to pilot with Zero two but she didn't fully understand what it would entail until the trials began. For the Franxx to start up, Zero two would require a certain amount of anal stimulation… Ichigo was placed directly behind Zero two with her face right in her behind, and to make matters worse, Zero two's suit was made without a butt cover meaning her naked asshole was exposed. "Do I really have to do this?..." Ichigo pleaded, nobody answered her question. She reluctantly got in position and cringed after grabbing a whiff of her co-pilots stench, Zero two looked amused and teased her; "How does is smell back there? Fufu~". Ichigo was angered by Zero two's demeanor and gridded her teeth as she was unable to refuse her duties. She started slow and gentle, her tongue coating the outside of Zero two's anus in saliva. Ichogo's expression tightened as the taste was far from delectable, but she continued none the less. After a few minutes of licking, Zero two grew tired of the lack of effort on Ichigo's part and spoke up. "Why don't you kiss it, or put your tongue deeper in me? I'm bored of this already… We aren't getting anywhere with you holding back, just tongue fuck me or something already". Ichigo stopped to regain her breath and retorted under her breath; "I'm licking it aren't I?... Why should I have to put my tongue in this bitch's asshole…". Zero two smirked, "You should watch your mouth little doggy, I can make this much worse for you if I feel like it~ You wouldn't want me to fart on you, now would you?~" she said followed by a sadistic laugh, wiggling her butt in front of Ichigo's face. Ichigo couldn't contain her anger and had an outburst, "You cunt! I'll kill you!...Ghh...If you dare fart-" she was cut off as Zero two sat back on her face and silenced her. She squirmed and groaned, unable to free herself from between Zero two's ass cheeks. "Now, I've been holding this one in for a while~ Ngh!" Pfffffrrrmmmsst*. A deep, steamy fart erupted in Ichigo's nose and mouth, she stopped moving as if she had died in that moment. "Ahh… That felt really good, are you still alive?" Zero two said, maintaining the firm connection between her ass and Ichigo's face. She slowly started to move again after taking in the potent smell of Zero two's gas, this time she was very obedient and started to slide her tongue inside Zero two's anus. "Nga~ That's a good girl~ finally realize your place here? You'll never compare to me!..." she said, bent over and taking it in the ass. "Fwuu! That stinks!..." Zero two continued as she smelled her own fart which had filled the whole cockpit, the wretched stench was trapped in there with the two girls and it wasn't about to get any better...