Chapter 5: Father

"What happened to me!" squeaked Izuku.

The shrouded man then swam up to the two serpents bowing to the elder one. "Sensei, we finally found him!"

Behind the mer was a mer covered in a purple haze approached. There tail resembling some type of deep-sea eel.

The large serpent spoke while carefully nuzzling Izuku's snout "Well done Tomura and Kurogiri. My dear pearl is finally back in the safety of my coils."

"Your what?!" said Izuku panicking at the massive leviathan's affection.

"Oh, my dear pearl your mother probably never told you what you truly are…"

"U-Uncle did say I was part Leviathan…"

At the mention of his brother the massive serpent angrily hissed "Sounds like me dear brother is still starving himself."

"B-Brother? Then that makes you All for One, King of the Leviathans!" Izuku slowly becoming even more panicked at the revelation.

"Yes, my dearest hatchling. You must have been so badly starved with how many mana cores you gobbled down."

"Y-You mean all of these came from mers and other creatures…"

"Where else do you think cores come from my silly hatchling," Chuckled All for One.

"N-Now that I think about it, I-I ate someone in my escape…" Izuku was looking at his 'father' horrified with himself.

"And THAT is just nature at play my little pearl. We are apex predators, the very top of the food chain. We decide who can live and who can die. For nature we also maintain what is prey, so they do not harm nature through over population and other means." All for One spoke in a booming and prideful voice.

"But that was another living breathing person who had a life of their own."

The shrouded mer named Tomura, huffed in annoyance as he shed his robe revealing a mer with a pale white tail, blood red eyes, and pale blue hair. "He's been around mers and humans for too long sensei."

"I'm afraid you are right Tomura. Tell me this, my little pearl, do you cry for a pig when it is slaughtered for its meat, or when a wolf kills to itself and its pack?"

"N-No…"

"I know this will be a hard change my little hatchling, but you can no longer see other creatures as on the same level as you. You are an apex predator and like everything else that breaths you also need to eat. So, anything that contains a core you should be considering as potential prey. The only exceptions really should be family."

Izuku laid on the core pile unmoved, face still twisted in horror. The realization that his world has truly turned upside down. All for One sighed before shifting to look at the eel-like mer named Kurogiri.

"Kurogiri if you would be so kind and go get Gigantomachia to assist Izuku into a nearby cave to rest in for the night. The poor hatchling needs his rest after today's events."

Kurogiri bowed before answering "Yes Master, I will be back shortly." He then disappeared into a purple cloud.

"Tomura"

"Yes, sensei," answered Tomura.

"Your brother will need your guidance. Teach him how to be a proper leviathan while I'm chained to this damned place."

"B-Brother?" spoke Izuku eyes still unfocused.

"That's right my little hatchling. Tomura here is your half brother born of a leviathan and mer. Just not a direct blood relative."

Izuku just nodded in response.


Soon a behemoth of a mer appeared from Kurogiri's purple fog. Tail was like that of an ancient shark with rock-like protrusions all over his body.

"Lord! You needed me!" called the massive mer, his voice seemed to boom throughout the trench.

Izuku stared at the mer in awe of his sheer size. It easily rivaling that of All for One's own massive size.

"Gigantomachia, young Tomura has finally found and brought home my hatchling," said All for One sitting up straighter with pride.

Gigantomachia's face then changed to that of surprise and tears? He looked to Izuku's small serpentine body and inched closer to get a closer look at him. While being very careful of his very large body. "Oh, Little Lord is the spitting image of Lord!" he cooed.

"I need you to escort both Tomura and Izuku to one of the nearby cave systems for the night. Then take them to the castle once they are rested. I would have Kurogiri do it however, I need him to help me with a couple of things."

"Of course, My Lord!" I will ensure that Little Lord and Little Tomura make it to the castle safely!"

"Thank you, Gigantomachia, now Izuku I need you to go with Tomura and Gigantomachia." All for One then nudged Izuku towards Tomura.

Izuku then sluggishly and a little clumsily swam towards Tomura who gingerly touched the side of Izuku's serpentine head. Only then did Izuku notice the size difference between Tomura and himself. Tomura was barely bigger than his head.

As if reading his mind Tomura spoke up "Don't worry little brother I'll tell you how to switch forms when you've had some rest. For now, follow me; you really do need it."

Tomura then guided Izuku to one of Gigantomachia's dorsal fins where they settled in between two of the rock-like protrusions.

"Alright, Gigantomachia we are ready!"

"Hope you are comfortable little Lord! I will swim as gently as I can!"

With a slow and gentle movement, they headed towards the mouth of the trench.

"Kurogiri…" All for One called his voice cold with an underlining rage as he watched Gigantomachia disappear with his child.

"Yes, Master?"

"Where did Izuku get that burn that's on his maw."

"My guess is that he tried to eat the One for All trident. As he had gotten to our position later then we had expected. He was also be chased by All Might with said trident in hand."

All for One made a low and irritated hiss. "Of course, in his starved state One for All probably too beautiful and delicious to ignore. However, why was it back in the city. Little Brother doesn't need to be near the trident to supply it with power. Either All Might is much more injured than I thought, or brother is getting desperate to take down me and the rest of my kingdom of leviathans."

"If I may propose a thought master, could it possibly be both. All Might being injured as well as your brother wanting to finish what he started. He could be trying to find a suitable successor to take up the trident."

"Hmm, that would make sense. Tell me when the next entrance examinations for their Hero Academy is?"

Kurogiri took a moment to think before answering "I do believe the next one is here with the next couple of months."

"I believe it is time to speed things up. Its time for Tomura to step up and take command. Now with his little brother soon to be safe in the kingdom. It'll provide him with plenty of motivation to go after All Might, and destroy that damned trident, the destruction of UA, and finally return my dear little brother back to where he belongs. My hope is that his time spent starving that he'll come somewhat quietly." All for One sighed "Sadly that is for the future, for now I am quite hungry. Is my dinner supply ready?"

" Yes, Master I'll go retrieve them. Will it be prisoners or slaves for this evening?"

"I'm feeling for prisoners, specifically from UA and its surrounding region if we have enough."

"I do think we did recently a large pod loyal to UA a couple of days ago."

"Excellent bring them."

"Yes, Master." Kurogiri then disappeared into a cloud of purple smoke.

"My main worry is that my little pearl has been around humans and other creatures for too long and gained an affection towards them. I do hope Tomura can help his little brother, last thing either of us need is another Yoichi."

Soon Kurogiri's cloud reappeared and out came a parade of mers chained together. Guided by black-skinned, heavily muscular mers with soulless eyes. Some heavily scarred and or were grossly misshapen. Abominations as if they were a puzzle pieces forcefully put together.

"Now however it is time to eat."


Gigantomachia stopped at a large cave entrance near the mouth of the trench.

"Here we are Little Lord! I'll be right outside if you need me!" called Gigantomachia as he settled down near the caves entrance.

"Let's go little brother," said Tomura as he nudged Izuku's head towards the cave.

As he was guided into the cave Izuku looked back to Gigantomachia "T-Thank you, M-Machia."

"Oh! Little Lord! You're welcome! Gigantomachia doesn't deserve such praise!" Gigantomachia looked away to try and hide his happy tears.

Inside the cave was a decent sized opening where the floor was covered in soft algae and bioluminescent plant life. In the center was an abundant number of algae, sand other soft looking plant life shaped to look like a nest of sorts.

"I try to keep this cave maintained for when I visit Sensei for several days," said Tomura.

"Sensei?" asked Izuku "Isn't he technically our father; has said as much."

"I call him sensei because he is not just my teacher, but I'm going to be ruling the Kingdom of Kamino from him soon."

"Wait doesn't that mean I'll get in the way of that?"

Tomura just chuckles at Izuku's panic "Don't worry little brother Sensei has made himself very clear that I would be the one to succeed him. Your only worry should be relaxing and enjoying your new Leviathan life. Now come on Izuku you must be exhausted."

Tomura then had Izuku coil himself into the nest comfortably while Tomura made a makeshift nest right next to him. It didn't take long for Izuku's eyes to become heavy and close. Drifting into a deep sleep dreaming of the beautiful but painful star.


A/N: Thank you all for your patience. Like i said on my Serpentine update is that nothing has been abandoned. It's just that life has gotten in the way so updates might come even slower might go back sometime and make grammar fixes eventually. Also added references for Kurogiri, Tomura, and Gigantomachia on my deviantart: Kaiyademon