6 Months!

"Aren't you both a month younger to sit up on your own?" The sister murmured as she looked on the internet, before looking at her baby brothers, who just kept staring at her.

'Is that how it is supposed to be?' Ariel thought, as he tilted his head in confusion. While Azariel looked at his body, thinking,

'And I thought I could even start walking by this time. This kind of sucks.'

It's been 5 months since they were born, and while it was a pretty majestic event, these months have been pretty boring. 

"Emily! Time for School!" shouted their mother from downstairs, making Emily panic a little as she picked up her bag in a hurry, kissed the boys goodbye and moved out of the room.

-Click!

The door closed as both the babies then turned around with their whole body before facing each other. Their eyes locked onto each other before Ariel spoke.

"Waga gaa waga wa. (You are an adult in a baby's body, aren't you?)" 

Azariel somehow understood what he was speaking and answered,

"Gaga googoo. (I am. But so are you, aren't you?)"

"Gawa? (I don't understand)" Ariel spoke in slight confusion while Azariel spoke again.

"Gaga gaga. (I know. This is all so confusing. It's really odd for me, too. Are you a reincarnator too?"

"Goo goo. (I don't understand what you are saying)" Ariel answered with his head tilted a little.

"…" Azariel looked at him with a slightly dumbfounded face before he sighed and then fell back. 

'Perhaps I should wait till we can speak some real words,' Azariel thought as he began feeling drowsy again.

Being a baby, Azariel has realized a couple of things. One was that his body gets exhausted pretty easily. 

If he thinks too much, he ends up sleeping. If he tries to crawl, he ends up sleeping. If he tries talking to his twin brother, he ends up sleeping. If he does anything, he ends up sleeping.

Thus, he only did any of those things when he needed to do. But then again, even when he does nothing, his body eventually gets tired, making him sleep again.

The other things he does is eat and poop. 

"Ogaga? (Why are you always tired?)" Ariel, on the other hand, has always been the energetic one. 

Ariel was the first one to crawl out of their bed. Unlike Azariel, he can even walk some steps on his own. It's like he never runs out of energy. Even after doing all the baby things he does, he had energy to spare.

'It's not me who is weak. It's you who is too energetic, you bastard!' Azariel thought as he cursed his energetic brother, before finally losing his fight against sleep. 

Ariel saw his brother sleeping again. He waited for a few seconds before…

'Status,' Ariel thought as he opened up the game-like system he had. 

It's something that everyone from this world had as soon as they turned 10. Except Ariel, of course…

[Name: Ariel!

Title: Regressor!

Body type: Juvenile-Human 

Talent: Learner (F-Rank)

Learner: Allows the user to learn everything 20% faster!

Status: Healthy!

Health Points: 30/30

Mana Points: 37/90

Stats:

Strength: 2

Dexterity: 1

Constitution: 3

Intelligence: 9

Wisdom: 5

Charm: 1

Skills: [Basic Mana Circulation!] [Rejuvenate!] [Mana Channelling (Basic)!]

…

[Basic Mana Circulation: Allows the user to circulate mana within the body, allowing more free movements;

Effects: Regenerate 10 mana per hour!]

[Rejuvenate: Heals the user by 10 HP in 5 minutes!

Cost: 10 MP!

Cooldown: 5 minutes!]

[Mana Channelling (Basic): By opening blocked pores in the body, increase the amount of mana that the user has!

Effect: The MP of the user will be 10x INT!]

…

'Since I can stand now, let's enhance [Basic Mana Circulation!],' Ariel pondered a little before standing on his feet.

The baby feet stood still with no support, barely holding the body weight of the boy as he closed his eyes and began meditating.

Circulating mana through the juvenile mana veins wasn't easy, even when you were sitting. Standing up and doing it was practically impossible for any children under the age of 10.

But for someone who lived breathing mana into each and every cell of his…

[Mana Circulation has been upgraded: Basic -> Beginner -> Intermediate!]

Basic is the one who knows circulation. Beginner is the one who can circulate it at a faster rate while maintaining a still form. Doesn't matter what position his/her body is in.

-Hupp!!

Jumping upon the bed railing, Ariel then jumped off and landed on the floor. With his high health, he didn't need to worry about getting injured now.

[Mana Circulation (Intermediate)!]

[Allows the user to regenerate mana and pour into various parts of the body at once. The user's concentration is required to activate the skill!

Mana Regeneration: 1MP/minute!]

'It's sad that I can't do anything for the next 5 years other than strength training,' Ariel sighed, as he knew that there were limitations of being a baby.

Their mana veins are juvenile and take at least a decade to complete. Even if he does his best, he still will need to wait 5 years at least. 

"Wa waowa owawa (I guess. I will revise the basics in the next few years.)" he spoke with a

 serious expression before sheepishly climbing back into the bed and then proceeding to sleep beside his brother.