(This was done by me with the help of my smut roleplay partner. There are adjustments made by me.)

Being a single mother in Ninjago City wasn't an easy thing, not only from having to take care of Lloyd but also her work.

Koko had herself ready, with a white shirt and an olive green jacket, orange hair tied up in a bun with chopsticks, and a green executive skirt going down to her knees. She walked into her new classroom as she just found a way to both take care of Lloyd and get herself an extra job.

Koko: Good morning class.

And so came in the new history teacher, a hot woman in her late 30s to replace a retired teacher. Hopefully, she won't be dealing with many problems, how bad could a class of hormonal teenagers be? The rumours about the new hot history teacher were true. Kai was prepared to impress her, he bought and wore new fancy accessories such as sunglasses and a necklace. Although he didn't know that it was her friend's mother.

Lloyd immediately buried his face by Kai's side as Koko was already starting to set her desk up and write on the chalkboard, showing her name as Mrs Koko GARMADON. The other students were shocked when they realised that Lloyd had such a hot mother.

Koko would begin to have her class, mostly unaware of the attractive effect she was having on others as most of the time she just seemed to be giving glances to an embarrassed Lloyd to make sure he was following the lesson. To Lloyd, this was the longest school day in his life, and while he didn't hate his mother for this, he just couldn't help but try to stay as hidden as possible. An hour later, it was recess time, and Lloyd was finally able to take a break from the nightmare.

Kai: Lloyd, can I ask you something important?

Lloyd, with his hood covering most of his head, looked over at Kai. He didn't seem much in the mood to talk but Kai was one of the few people who didn't hate him in the school, and for some reason, everyone seemed to be okay that his mother had been by his father's side years ago?

Lloyd: Yes.

Kai: Can I take your mum out on a date?

Kai just arranged himself a one-way trip to certain death when he asked that question as if he was mocking him. Lloyd suddenly grabbed him by the neck and slammed him against the wall, making everyone stop and look as if he was choking the life out of the red ninja.

Lloyd: I can take people mocking me, Kai, but NEVER MESS WITH MY MOTHER!

Kai: OK, man, chill.

Lloyd let Kai go and stormed away from him. Meanwhile, at the Canteen, Koko walked around and headed to the Teacher's room for her recess. She sat at her desk and ate the food she prepared for herself. Afterwards, she finished the recess and went back to the classroom to

continue teaching her students. After the class, she walked to the parking lot towards her car, however, there was a blind spot to the cameras on the way, right where Kai could approach her without anybody noticing.

Kai: Hi, Lloyd's mum.

Koko turned to the side and looked over at one of her students, that must be Kai. He was a pleasant surprise, she had been told he was a little troublemaker but he was well behaved the whole class.

Koko: Ah, you must be Kai.

She didn't notice that he was looking at her boobs. Koko was certainly not a bad sight to see, with orange hair, relatively tall, a beautiful face, E-cup boobs, fit chest, wide hips and a round ass.

Koko: So, how can I help you?

Kai: I heard that you'll also be teaching Chemistry. That's my weakest subject. So, can you be my private tutor?

The Chemistry classes, of course, she would help a student in need. Maybe being a tutor was a little much but she could give him a few lessons.

Koko: Yes, of course, exams will be coming soon so would you like me to go to your home tonight?

Fortunately, Nya was busy with extracurricular activities and won't be back until midnight.

Kai: Sure, see you tonight.

Koko nodded and went home, her ass swaying as she walked to the car as the last temptation to Kai. After leaving everything, literally everything, that Lloyd would need at home, she went to Kai's home. She had a white buttoned-up shirt, a black executive skirt going down her knees and a briefcase with school material. She knocked on the door and waited for him.

Kan: Hi, you're early.

Koko entered the house, it was her first time visiting Kai's home. She always preferred to be early rather than late. Koko came into his home and they went to a table where she began to set up his material.

Koko: Yes, traffic was better than I expected, just had to prepare Lloyd's dinner, late night supper, dumplings, set up his bed and make sure he would be comfortable when he arrives. I don't know why, he seems to get late at home all the time, especially when his father attacks.

Kai didn't hear what she said, he was busy staring at her boobs. Koko turned her back on him as she was setting up the table, unaware of how much he was ogling her.

Koko: So you need help with chemistry?

Kai: Yes.

And so, the tutoring session starts. After 45 minutes, they decided to take a break. Kai seemed to be a little unfocused on the lessons, although she couldn't figure out why. She accompanied him to the kitchen to get a glass of water.

Koko: Don't push yourself too hard Kai, not everyone gets Carbons the first time.

Kai smiled at his teacher. After the break, Koko continued teaching Kai. Kai just continued to be distracted during the lesson, that was getting frustrating, his mind seemed somewhere else entirely. She snapped her fingers in front of him to get his attention.

Koko: Is there something wrong, Kai?

Kai: No, nothing's wrong.

Kai tried to control his selfish desires.

Koko: You just seem distracted, are you sure you are okay?

Koko's motherly instincts just seemed to make her look more caring, after all, she couldn't have her student going through something without help. Kai's lust soon became uncontrollable.

Kai: Can I be honest with you?

She put her hand on his shoulder and gave a reassuring smile to calm him. Surely it can't be that bad.

Koko: Of course.

Kai: It was only after going through puberty that I realised that you're... so hot!

She pulled back her hand and suddenly seemed awkward. Her face flushed red as she seemed to have been caught completely by surprise.

Koko: I…, well…, thank you I guess? I mean, if I'm distracting you then I could call another teacher for you…"

Kai: No.

Kai stood up and locked the door.

Kai: I only want this teacher.

He finally showed his true colours. Did he just lock the door? Koko stood up, rather unsure of what he was going to do but probably not something very innocent.

Koko: Okay…?

He walked and stood behind her.

Kai: Satisfy me!

Kai placed his hands on her boobs and groped them. Koko didn't know Kai was a Ninja, but neither did he know that she was a warrior herself. Sure, she was a little rusty and didn't have any weapons, but she wasn't just going to let him have his way so easily. As he groped her boobs, she smacked him across the face and threw him aside.

Koko: Your mother never told you how to behave with ladies?

Kai grabbed his katanas and fought Koko. After a few minutes, he put on a gas mask and released a sleeping gas, causing Koko to fall into a deep sleep. Kai was a much better fighter than she thought and the gas was something completely unexpected. During the fight, Kai's Katanas ended up slicing a hole in her shirt, showing off her cleavage before the gas made her pass out on the ground, but it wouldn't take long for her to wake up.

Koko woke up on a bed, her shirt opened up while her wrists were tied. All while she was seeing as her student was stroking himself at the sight of her, and she wasn't even naked. Either he was a pervert or she was hotter than she thought, probably both, yet she showed a stubborn face to him.

Koko: You better release me now Kai, I have handled far worse than you.

Kai: Such confidence, can't wait to break it.

She gave him a death glare, if she just had her sword then this would've been over by now. Koko stayed on the bed, without much of an option other than seeing what this hormonal teen would do. Kai started by taking off her skirt, revealing her blue panties, and rubbed her clothed pussy. As her skirt was removed, her shaven legs were revealed and Koko grunted. She didn't want to make it seem like she was enjoying it to him. She gritted her teeth and kept her severe glare at him.

Koko: You pervert!

Kai: Don't deny it, you're enjoying what I'm doing to you now.

She looked away and her tough face for a moment gave a wince of agony. Suppressing those moans was getting hard, but she was harder than this. With a subtle lip bite, she looked away, although her nipples were starting to harden under her bra.

Koko: I… no I don't- you are… a sick pervert!

Kai groped her boobs again.

Kai: Are you sure?

She sharply breathed in as he suddenly groped her clothed breasts, letting out her first moan. If she just wasn't stuck in there…

Koko: S-Stop it!

Kai was happy to see that his efforts to break Koko were working. Koko attempted to kick Kai away from her in a desperate effort to make him quit.

Kai: There's no use resisting anymore, you're gonna enjoy yourself tonight.

Koko hasn't had any proper sex since before Lloyd was born, Garmadon wasn't exactly the kind who could pay a visit to her in Ninjago at any time. She had years of repressed desires inside of her, for a time she thought there would never be any intimacy between her and someone else. Looks like Kai was going to force that part of her to come out, with the hunger of 16 years. She still tried crossing her legs to make it harder for him, but she was already getting wet, staining her panties.

Koko: Please don't…

Kai took a sample of her cum and tasted it. Koko had a sweet taste to her, and as he took her slick, she gave another painful moan. She just seemed in pain trying to resist her urges so badly when her whole body was begging for more.

Kai: You seem tense.

Kai gave her an erotic massage to help her relax. Koko felt something as Kai just teasingly began to rub her. Her fit chest, her thighs, her shoulders, her sides… everything just perfectly made to ease her mind as she looked over to Kai, trying to resist the urge of kissing him.

Koko: Y-You are my student… my son's friend… don't do this~

Kai: I assure you, I will not regret this.

Koko couldn't keep resisting that stubbornness anymore. Kai just took what he wanted and she was helpless to stop him. As he was close, rubbing her shoulders, she leaned her head forward

and gave in, kissing him passionately on his lips. He was pleased with his accomplishment: breaking Koko's mind. The kiss soon became more intense.

Koko's breathing became hastier with her giving herself up to the fiery passion. She kissed Kai like she hadn't kissed anyone in years, easing up her body and spreading her legs a little more on the bed to let him take command.

Kai frantically took off his red shorts and underwear. He was able to wow Koko with his fully erected cock. She looked over to Kai and bit her lips in anticipation. Sure, he wasn't a Lord Garmadon but she hasn't had a cock inside of her in so long that she may as well have become a virgin again.

Koko: You must amaze a lot of girls with that~

Kai: Are you one of them?

Koko: Well since this will happen, I want to see how good you are first~

Koko teased him up with a more seductive tone to her voice. What was the point of resisting the inevitable? Might as well enjoy it. Kai moved her panties aside and gently slid his cock into her wet pussy. Koko was warm on the inside, and while not the tightest she had lost her looseness with time. She gave a moan as her shaven pussy was finally shown, submitting herself to that pleasure.

Koko's pleasure motivated Kai as he started drilling faster and harder. As much as Kai was driving her mind to a pleasurable insanity, she still had consciousness of one thing, and between moans she warned Kai. Although she did not have a way to force him to comply.

Koko: Don't… cum i-inside~

The moment he reached his climax, he pulled his cock out and ejaculated all over her neck and cleavage. She gave another moan, although not yet reaching her climax, as he shot up into her chest. Her bra, stomach, cleverage and even some of her face was covered with ropes of thick cum as she licked one of those that fell on her lips. Her boobs seemed swollen, now with a double D size, and she looked at him with a horny look.

Koko: So tasty~

Kai's sex fantasy gradually came true. Koko's bra was a mess, but it wasn't just cum that was covering it. There were two wet patches growing in them as Koko gave a moan and gritted her teeth, feeling the sensitivity of her nipples.

Koko: Here is a biology lesson for you Kai, some women, when excited, have a little surprise in their breasts~

Kai quickly took off Koko's blue bra so that he can see the "surprise". Her boobs were swollen under her bra. As the bra was opened up from the front, it seemed like her nipples were hardened, with a wetness around her in the areolas. She was lactating like a pregnant woman. He held one of her lactating boobs.

Kai: May I?

With a bite to her lip, she encouraged him with a nod and a little provocation.

Koko: Thirsty, aren't you?~

Moments later, his thirst was quenched after drinking Koko's breast milk. Her milk tasted like almonds, and as he ravaged her breasts, she continued to moan out of pleasure. It has been so long since someone treated her that way.

Koko: Liked this lesson, baby boy?

Kai replied by nodding. Unfortunately for Koko she still had not reached her own orgasm, she looked down and saw Kai's cock again with thirst.

Koko: I'm all yours tonight Kai, I'm sure you have much more energy to release~

Kai placed his cock in between her boobs. She grinned to Kai as he had her all for himself. Her boobs were already lubricated by breast milk, sweat, and even his own cum. Slipping in was not a problem at all, and as he squeezed her breasts, a few drops of milk would leak from them. He started moving front and back. Her moans were music to his ears.

Perhaps these lessons wouldn't be as bad as she thought. Koko felt herself getting wetter by the second as he thrust on her sensitive boobs. About 2 minutes later, he ejaculated all over her body. Kai was quicker this time as a shower of cum covered her chest and her face. She couldn't get back to her house this way, even her hair had ropes of cum in it.

Koko: I'm going to need a shower after this~

She still didn't reach her orgasm and it was getting frustrating to be driven so close to the edge only for him to break first.

Kai: May I cum inside you?

Koko wasn't very keen on getting herself pregnant, no matter horny she was now.

Koko: You can put inside but pull out when you get close.

Kai: Like just now, sure.

Kai smiled to himself as he just deceived her. Trusting him, Koko spread open her legs for Kai, showing off her wet pussy once more. It seemed to be almost calling to him, inviting him inside in an instinctive manner.

Koko: Come in fire boy~

Kai shoved his cock into her pussy again. His thrusts were harder but slightly slower. She moaned out of delight as Kai entered her again, still thinking that he would pull out. She gripped the ropes tying up her wrists as she was riding on her pleasure.

About 3 minutes later, Kai pulled his throbbing cock out for a moment right before shoving it back in. Koko was on her edge, with eyes closed and moans coming from her mouth as she was getting sweaty. She had opened her mouth as he pulled out, expecting another shower, but when none came she opened her eyes to see him.

Koko: What are you-?

Suddenly, when he shoved into her she felt herself reaching her orgasm. As her vagina clenched around his cock, he fired up inside and she felt a warm liquid entering her fertile womb, finally having that sensation of being filled once again as Kai's liquid found it's way inside her. After pulling his cock out, he quenched his thirst again.

As she began to calm herself down, with his cum still leaking from inside of her and her sweet milk satisfying his thirst, the realization fell on Koko. He came inside of her, and she didn't use any… he did the one thing he wasn't supposed to do. Her angry glare turned to him as he was sucking her dry.

Koko: What have you done…?!

Kai: Nothing~! I'm tired.

Kai got out of bed and wore his underwear and shorts. What a liar, she knew how being injected with cum felt like!

Koko: Untie me! Now!

Kai untied Koko, knowing that she has no energy to fight him. She rolled over on the bed and had her face down, with her ass facing up and her shirt still unbuttoned on her arms. She didn't know if she should cry or be completely enraged, either way she could barely stand right.

Koko: You idiot…, if I get pregnant from this…

Kai: Your boobs will get bigger and better.

She smacked him on his face, what a stupid response, he had no idea how grave this was.

Koko: Do you have any idea what is going to happen if Lloyd or Garmadon find out?

Kai: Yes! But I don't care.

Koko: They are going to kill you if I don't kill you first that is.

Kai was soon getting annoyed by Koko.

Kai: Get out.

Koko: I will see you in detention tomorrow.

She threatened him, grabbing her skirt and reattaching her bra and shirt. She headed out of the room and began to leave the house.