(Dimensional Gap)
After deciding Issei's name, they began to ponder, how would they raise him. It is safe to say that neither of them has had any experience raising a child in their lifetimes.
However, they would take it one step at a time and make adjustments as it goes.
(4 years later)
We see Issei flying about in the dimensional gap with his father, as great red is teaching him how to use his wings.
Meanwhile, Ophis is seen reading a manual that she picked from the human world on how to raise kids although it was hard to follow what humans did considering they are dragons so from time to time she sneaked into the dragon territory in the Underworld, ruled by Tannin, the former Dragon king to see how the families raised their younglings.
\\\Flashback
To her surprise, although they were different races, they were very similar to how humans raised their young, albeit there are differences such as teaching them how to fly, breath fire, control their powers and other dragon related things. However, she saw them helping them learn to walk, talk, playing with them whenever they could and also let them play and socialize with other hatchlings just like how human take their kids to parks and they play with one another.
She even saw some dragons teaching their kids proper manners and etiquette that might be useful in the future. Others are teaching their kids how to fight as dragons
Seeing the younglings play together made her think "hmm, in terms of fundamental lessons, great-red and I can teach him well however what will we do in terms of social relations?". Ophis has spent most of her life in solitude and hasn't really had any interactions with many people.
The few have only been the members of khaos brigade that joined her but they weren't really social interactions, just business. Except for Vali, who conversed with her from time to time, their hasn't been much exposure to people.
"I'll talk to red about it and see what he thinks. "
/End of Flashback
Ophis watched Issei attempting to fly using his 4 wings. At first, he staggered and you could see him pout, which she found very cute, but after a few attempts he managed to succeed and is now flying alongside his father.
Although, to her dismay, he started performing a few stunts reminding her of great-red but after seeing his happy expression, she decided to let things go.
Still for a small child, he learned things pretty quickly. At only 4 years old, he is able to speak pretty well and absorbs everything they teach him very fast.
They are both extremely proud of his progress as would any parent their kid.
He was also really powerful, which comes at no surprise being the child of two supreme dragons, however a few days after his birth, they realized that his power was way too strong for his body to handle and if something was not done, the boy would have been extinguished by his own power so Great-red conjured multiple levels of seals that sealed most of Issei's power. They agreed that they would teach him over time how to control his strength and as he becomes stronger, the seals will be released 1 at a time until he masters his powers and takes his rightful place as the third dragon god in existence.
Ophis was sure that in time he would surpass her and eventually great-red.
Despite most of his power sealed, he still possesses much strength within him, being stronger than a high-class devil but not yet at Ultimate-Class which for a 4-year-old hatchling is very strong.
"Daddy, wait for me" breathed heavily Issei as he tried to catch up to his father. "you are going to fast.
" Great-red looked over his shoulder to see a panted issei as he slowed down waiting until issei caught up.
"Oh sorry, Issei. Still you are making great progress for a 4-year-old hatchling.
It shows you possess great untapped potential. Isn't that right, Ophis?"
Issei looked back to see his mother coming so he flew straight at her and hugged her. "Mommy.
"
With a warm smile, Ophis reciprocated the hug and she held him close to her chest.
"Hi Issei, I see you are learning to fly properly. As expected from my son.
I am so very proud of you. " Stated Issei as she kissed his forehead.
Issei giggled a bit because it tickled him when his mother did this.
"As your father said, you hold great potential inside of you waiting to be unlocked and eventually when you learn to master yourself and your power, I have no doubt you will eventually surpass us. " Stated Ophis with absolute confidence.
Issei was very happy when she said that
"you really think so mom? Will I be as strong as you? Will I be as awesome as daddy?" he said with sparkling eyes which caused Ophis to laugh a bit.
"Yes Issei, although I don't think cool is the right word to describe your father. "
"HEY, I HEARD THAT. " Shouted Great-Red.
Issei laughed and soon started yawning showing how tired he was. He was practicing very hard so it was only naturel.
Untapped potential or not, he is still 4 years old and requires sleep. Ophis saw this and started singing a lullaby she heard in the human world and slowly Issei closing his eyes until he went to sleep.
"Good night my little Issei. " Said Ophis as she looked at great-red and he conjured a bed for issei to sleep in.
After safely tucking him in, she turned to great-red
"Have you thought about the conversation we had previously?"
"Yes and I do have a proposal if you are willing to hear it. " Stated Great-Red.
"Go ahead. "
"Well, the only way for him to develop his social skills is to be able to mingle with other kids his age so I propose moving in the human world and let him play with kids his age. " Proposed Red.