Yikes. Sorry it took so long to get this out. I couldn't find any motivation to get this done for a long while, but I'm back now, at least.

It's reasonable to assume that any civilization that is technologically advanced enough for interacting with the larger galaxy should have the technology to make universal translator chips, à la Guardians of the Galaxy. That's why I went back and forth from 'Saiyan' to 'Saiya-jin', because that's what people whose native language is Japanese would hear. But if the POV changes to someone who isn't fluent in Japanese, then I'll use the dub names.

And also because it seems cooler that way.

II. Monkey Business

The next four years of Inko's life had been rather...difficult, to say the least. Adopting Izuku had filled a void in her heart that she thought would stay empty forever, but when it came to raising him...while he was a very sweet boy with the ability to make hearts (mainly hers) melt, he was the very definition of rowdy. Gohan had concluded that based on the armor and Izuku's strength, the Saiya-jins were some sort of warrior race like the Spartans of Ancient Greece, and had most likely made enough enemies to warrant having the majority of them killed.

She didn't want to admit it, but a part of her almost wished that the other survivors of his race would never find him. She knew it was wrong to think of something like that, considering the circumstances behind his arrival to Earth, but Izuku was her son now, and never dared to think about what she would do if he was taken from her.

But a toddler having the strength of a full-grown human adult? That was a madness in and of itself. Her father had told her that it was because of his years of martial arts experience that Izuku hadn't accidentally killed him yet, and even offered for her and Hisashi to live at Mounft Paozu with him.

She would be forever grateful to her father and Izuku's biological parents for allowing her the chance to have the family she's always wanted, but he could be so trying, at times.

Whenever he would get excited or angry, there was a high chance of him breaking everything in sight, which caused her to resort to performing clever tricks with toys using her Quirk in order to calm him down. Hisashi, on the other hand, had found a much easier time because of his Fire Breath, and was more easily able to distract and entertain Izuku than his wife could.

Unfortunately, this caused quite the problem when he had to travel overseas to look for work, because Inko was forced to quit her job in order to raise Izuku full-time, and so that their son's monstrous appetite wouldn't end up eating them into poverty. Thankfully, however, Gohan's estate in Mount Paozu was only a thirty-minute drive away, so he was able to regularly help out with keeping Izuku's strength in line, as well as teaching him the basics of martial arts in order to better control it.

While it was quite a relief for the adults' funds to learn that he wasn't too interested in toys, but just like every child, he was obsessed with heroes, especially All Might, and some of Izuku's favorite pastimes were shouting 'I AM HERE!' and 'SMASH!' while wearing an All Might onesie, as well as repeatedly watching his debut video on repeat.

But even with all of the difficulty that came with raising the rowdy and rambunctious child that was Izuku...Inko wouldn't change any of it for the world.

As she chopped some vegetables, Inko was happily humming along to some upbeat song she stumbled across on YouTube, and spared a glance outside of the window to see Izuku doing punches with Gohan. A few moments later, the music suddenly cut off, and instead started to play her ringtone. Setting down the knife and wiping her hands on her apron, she walked over to the counter and picked it up to see that it was her husband calling. "Hi, dear," she began. "Is everything okay?"

"Inko, you're not gonna believe this," Hisashi replied urgently, which caused her mood to dip as she became worried about the potential news.

"What's going on?"

"I just got a job offer for Capsule Corp."

Inko's eyes widened as she briefly put a hand to her mouth in shock. "Wait, are you serious? How? That's amazing!" Capsule Corporation was one of the largest and most influential companies in the world, renowned for its advancements made in technology, science, and medicine. But what really skyrocketed its popularity to a household name, was for its development of the 'DynoCap': a small, portable device that could easily fit in the palm of one's hand, yet could store anything up to thousands of times its weight.

It's what elevated Brock Briefs (the founder) from being just one of the richest men in the world, to the first trillionaire in history.

"So I was walking around one night," Hisashi began. "And there was this girl who was being harassed by some guy with a weird-looking mutation, so I got him to leave her alone, and it turns out she was the CEO's daughter! Can you believe it?!" he finished with a laugh.

"Hisashi...that's amazing..." Inko replied, having gone to the dining room and sat down in one of the chairs. Due to becoming a stay-at-home mother, she had ended up having to visit Gohan every weekend in order to save as much as possible from her and Hisashi's savings. But with his new salary, maybe they could finally loosen up their belts. Izuku had been wanting to get some All Might merchandise lately...

"Anyway, I wanted to see how you and Izuku were doing," Hisashi continued. "Has he been, uh, playing well with other kids?" Ah. Because of Izuku's strength, there was the obvious problem of mingling with other children. It was very important for a young child to learn how to socialize, and based on what could be gathered from the message in Izuku's pod, well as observing his behavior, it was (mostly) concluded that humans and Saiya-jins shared many similarities when it came to social interactions.

This meant that alongside having a very similar physical appearance to humans whose Quirks weren't mutation-type, the two species shared a common ancestor in their lineages, and that wasn't something any of the three adults wanted to spend sleepless nights thinking about.

Inko, Hisashi, and Gohan had agreed to tell Child Protective Services about how Gohan came to find Izuku (bar the alien space pod), alongside the couple's difficulty with conceiving.

It came as quite the surprise that the adoption process had only taken a few weeks, rather than the minimum requirement of six months, though Gohan had confessed afterwards that he had used his connections with a few Pro Heroes to pull some strings and speed things along. It also helped that they had left a very good impression on the social worker that came to examine and interview them.

"Well, I'm not really sure if it's safe yet," Inko admitted. "Dad says his training's going really well, so it might be a few more months till that can happen. Mitsuki's been wanting to set up a playdate." Mitsuki Bakugо̄ was the only person who even partially knew the situation, with Inko having confided in her about Izuku's adoption, and always insisted on setting up a playdate between him and her son, though Inko was always hesitant to agree due to her not wanting Katsuki to get hurt because of Izuku accidentally using a bit too much force.

"Yeah, that's a good point," Hisashi replied, before moving onto a different topic. "Oh, yeah, do you remember that time we went to that bar and..." The couple continued to talk about everyday things and his experiences in the United States for the remainder of the hour as Inko continued preparing the day's lunch, smiling and occasionally laughing at his stories.

"Widen your stance a bit, Izuku."

Izuku shifted as he widened the gap between his feet, before crouching back down in a horse stance. "Like this, grandpa?"

Gohan smiled and nodded. "Good, now remember to keep your arms to your sides - yes, just like that - and now show me what I've just gone over."

"Hyah! Hyah! Hyah!" With each yell, Izuku paired the first one with a right-handed punch, before switching to his left, and then following up with a round kick with his right leg. He then repeated the attack a few more times, with Gohan watching on and nodding in approval. After several moments went on with Izuku punching and kicking the air, he raised his hand in a gesture for him to stop.

"Now, I want you to use that on me," he said, as he set down the Nyoi-bо̄ and dropped into a fighting stance, with his hands and arms had moved accordingly; his right hand curled up in a fist at his side, and his left had formed a half-fist, half-claw out in front of him. This was the stance that was most familiar to those who practiced the Kamesenryū.

"Okay!" Izuku chirped, and quickly moved to copy his grandfather, though he had trouble properly curling his left hand, instead opting to just make it into a fist.

Gohan internally shrugged as he watched the boy's brief struggle. 'Eh, that could always be fixed later.' When Izuku finally finished, he looked back at Gohan in silence as he waited for the signal to start. "Go." Izuku darted forward and began to attack Gohan using the same drill, with the latter dodging, blocking, and parrying each hit that was sent his way.

"Now switch!"

Almost immediately, Izuku switched the direction he attacked with by changing to a left jab, then a right one, and then following up with a left round kick. The two continued the exercise for another minute, with Gohan noting with pride how quickly Izuku was becoming proficient in his training. Even if learning how to fight more easily it was most likely ingrained in his Saiya-jins biology, this was still a product of hard work and dedication.

If he kept it up at this rate, he would end up giving Muten Roshi and the top heroes a run for their money.

"Food's ready!" called out the voice of his daughter, which prompted Gohan to leap back and signal for Izuku to stop.

"Very good, Izuku," he praised with a smile, before moving to pick up the Nyoi-bо̄ next. "Later, we're going to have you learn how to properly dodge attacks, but before that, why don't we take a break and eat some of that katsudon your mother's been making, hm?"

Izuku's mouth immediately began to water at the mention of his favorite dish. "Oh, boy!" he exclaimed, as he eagerly rubbed his hands together and ran towards the house, with Gohan shaking his head at his grandson's excitement as he followed him inside.

When Izuku made it to the door, he kicked his shoes off and grabbed a nearby chair, before quickly making his way to the sink. Once his hands were fully clean, he jumped off of the chair and made a mad dash towards the dining table, where an absolutely massive (to the adults, at least) bowl of katsudon was waiting for him. Though he was eager to immediately dig in, he knew that he had to wait for everyone to be seated (as painstakingly difficult as it was), and before long, Gohan had joined him and Inko.

"Itadakimasu," the two adults quietly said, with Izuku echoing them, and not even a second had passed before he picked up a slice of fried pork and seemingly inhaled it, and was quickly moving on to the rest of his food without a care in the world.

Inko lightly smiled and shook her head at her son's lack of table manners. "Izuku," she began. "What did I tell you about using your hands at the table?"

"But I'm hungry," he whined, before turning back to his bowl and eating several spoonfuls of rice and egg, albeit at a slightly slower pace than when he first started.

"It doesn't matter if you're hungry," Gohan chimed in. "If you start making a mess of yourself every time you eat, then no one will ever want you to eat with them, and you wouldn't want that, now would you?"

Izuku loudly gasped at the prospect of being denied food, of all things. He considered food to be one of his absolute favorite things to do each day, maybe even more than heroes and learning how to fight from Gohan. He didn't think he'd want to deny food to anyone, even if they were mean to him. "Okay..." he said, finally slowing down his pace to a manageable level, although it was still quite a bit faster than his mother and grandfather's.

He was a very hungry Saiya-jin, after all.

Gohan was growing more and more fascinated as he continued reading his digital copy of Dune. He had watched the movie reboot that came out when he was just a young man fresh out of high school, but to be honest, it just couldn't compare to the original source material. There were several times where he wondered if the technology and space travel was similar at all to what the Saiya-jins used. Perhaps one day he could find out for himself.

"Grandpa?" Gohan looked up from his chair to see Izuku tugging on his leg.

"What is it, Izuku?"

Izuku pointed to the window next to them. "What's that white light outside?" Gohan briefly glanced at the window to see the night sky and clouds slightly illuminated, to which he understood Izuku's confusion.

"Ah. That's just the moon," he replied, and Izuku curiously walked over to look out towards the sky for the bright shape that would replace the Sun during the night, but frowned when all he couldn't find any glimpse of said object.

"...I don't see anything."

"Hm. Well, why don't we go outside and take a look?" Gohan asked, setting his book down and standing up from his chair. "But not for long, though. You do need to go to sleep soon." Izuku silently nodded as he followed his grandfather out the back door. When they stepped outside of the house, he briefly shivered from having not yet changed out of his gi, but shrugged it off in favor of seeing the moon.

When he finally was able to get a glimpse of the celestial body, "Woah...is that the moon?" he asked, pointing a finger to it.

Gohan smiled at his grandson's awe and looked up to see the full moon. "Yes it is, my boy, yes it is. Now let's go. It'll still be there tomorrow night..." When he clapped a hand on Izuku's shoulder and turned to look back at him, the boy was still looking up at the sky, but didn't seem to register Gohan's words at all. "Izuku...?" Upon getting a closer look, he could see that the boy's eyes were changing from black to red the longer he stared at the sky.

...Along with his body shifting as it started to grow larger in size.

"I-Izuku!" Gohan cried out in alarm, taking an unconscious step back at the sight. "Izuku, stop that right now!" He kept trying to repeat his name, and even moved to try to shake him, but nothing he did was able to get through to Izuku. It was as if something...primal had taken over his grandson, and Gohan was forced to move even further back and let the transformation finish.

Eventually, the little boy known as Izuku Midoriya was no longer there. Now, all that was left of him...was the monstrous beast known and feared throughout the galaxy as the Great Ape.

As the ground began to rumble with the force larger than that of a major earthquake, Inko was forced awake from her early sleep and into a sudden panic, as she immediately thought that a villain attack was taking place. She glanced next to her, and seeing that Izuku wasn't next to her, began to panic at the thought of something happening to her son. With haste, she grabbed her slippers and put them on, before rushing to Gohan's room and opening the door.

Except he also wasn't in his bed, which made Inko become more and more fearful by the second. She grabbed her phone and began to dial the number for emergency services and have them send Pro Heroes, when a deafening roar shook the house and caused her to drop her phone out of shock.

Her poor heart couldn't take any more of this fear, but she had to survive and see this through for her husband, son, and father. When she finally made it out of the house to see what was happening, Inko was met with the sight of a titanic-sized monkey pounding its chest, and she turned to start looking for Izuku and Gohan, when she saw the latter also staring back at the beast out of the corner of her eye.

"Dad!" she called out, quickly running towards him. "What's going on?!" All Gohan could do was stare at her in shock as he tried to form a response.

"I..." he began, but Inko quickly ceased paying attention as she noticed that there was someone missing.

"Dad...where's Izuku?"

"Inko..."

Gohan moved towards her, but Inko stepped back, her tone of voice growing more desperate as she began to fear the worst. "Where is Izuku?" Her father stopped moving, and seemed to be at odds with himself, before he shakingly pointed a finger towards the monkey that was beginning to rampage the house.

"That's Izuku!"

Out of all the answers she could have expected, this wasn't one of them. The thought of her Izuku, her baby boy, having become such a monstrous beast? She briefly thought for a split second about how he could become one of the best heroes with that power, if it weren't for the fact that he was now attempting to destroy anything and everything around him.

This was the power of the Saiya-jins. Not highly-advanced weapons or technology but this. The very same power that most likely drove the majority of them to extinction.

Without hesitation, Inko stepped forward and cupped her hands to her mouth. "IZUKU!" she yelled. "Please, this isn't like you!"

"Inko!" Gohan hissed. "What are you doing?!" He grabbed her arm in an attempt to stop her, but the damage was already done, although it seemed to have gotten his attention, as he stopped what he was doing and locked his gaze at the two adults, and tilted his head curiously.

Inko silently laughed in relief as she was convinced she had gotten through to him, but Izuku let out another deafening roar, before leaving his mouth (maw?) open, where ki started to pool together, eventually growing into a sphere that looked to be the size of the entire estate, and was still growing even larger. Immediately knowing that the blast would kill both of them, Gohan willed his fear away as he cupped his hands to his side in response, praying that his daughter would be able to make it out of this alive, even if he didn't.

"Ka...me..." A tiny spark of ki came to life in the space between his hands, and eventually grew in size to fully occupy it, glowing a brilliant blue glow as he chanted the name of the Turtle Devastation Wave. "Ha...me..." Before he could fire the attack, however, he was interrupted by the sound of a booming voice, along with a sound that could be summarized as 'two things very loudly colliding with each other.'

"Sacramento...SMASH!"

Izuku's head was forcefully jerked to the side, the interruption in the buildup causing the ki attack to dissipate into nothingness, before another impact was made, this time on the forehead, and he was sent tumbling back, before finally falling to the ground in a boom, the shockwave also causing Inko and Gohan to fall as well.

When the figure finally landed, it was then that Gohan was able to get a good look at who it was, and was shocked to see a familiar set of blond hair spiked up to resemble a 'v', alongside a trademark grin, though it was noticeably dipped into a grimace.

He was looking at All Might: the worldwide-ranked Number One Hero and Japan's Symbol of Peace, Vanquisher of Piccolo Daimaō. But in spite of all the impressive titles, he had only ever seen him as Toshinori Yagi: his and Muten Roshi's former student, and the pride of the Kamesenryū.

"Gohan-sensei, I need to get you somewhere safe," Toshinori urgently said, as he helped him and Inko up, before taking both of them into his arms and pushing ki into his feet to fly away from the scene. When he finally landed a good distance away, he set them down, before turning back to handle the threat. As soon as he lifted into the air, however, he was stopped by a hand grabbing hold of his ankle.

"It's-it's not a villain, Toshi," Gohan said, making Toshinori look back at him in confusion. "It's my grandson."

Toshinori slowly descended back to the ground. "What..." he began, but stopped himself as he realized that he was wasting time, and that the threat was at large. "I'll make sure your boy doesn't destroy anything else." He turned back around, but was stopped again by Inko's voice.

"All Might - please don't hurt him too much! He just doesn't have control over his Quirk!"

Toshinori solemnly nodded. "You have my word. Now go! There's a village down that way!" He waited for Gohan and Inko to start moving, before he turned back around for the last time, once again pushing ki into his legs to fly back towards his former teacher's house, and briefly scanned the area for the boy-turned-monster, when a sudden noise caused a chill to run down his spine.

"All...Might..."

Toshinori looked directly under him to see a massive hand moving towards him. 'Aw, crap baskets.'

Brock Briefs = Boxer Briefs. Just to stick with the underwear puns.

The updates for this fic are gonna be pretty damn slow because I'm putting the most focus on my MHA x JJBA crossover, and I'm also going to be writing 2 more (Overwatch and Assassin's Creed), but once I get done with the Sports Festival, I'll be putting more focus on this one.