Under the guidance of Fugaku Uchiha, both Itachi and Ren were beginning to refine their Chakra. They were both two years old now, but to Ren, the difference felt immense between him and Itachi. In his eyes, he was nothing compared to Itachi. But, everyone still saw them both as geniuses.
As expected of Itachi, to already be able to refine chakra at the age of two. I can only barely feel my chakra.
"Father, why can't I feel the chakra like big brother?" Ren asked gloomily.
"Feeling chakra requires not only luck but time, keep working hard Ren" Fugaku replied disappointedly.
"There seems to be a huge difference between the two, maybe Ren isn't cut out to be a ninja," Fugaku thought silently.
...
A week later, there was a young boy who started jumping around excitedly, that boy was Ren
"I can finally feel my chakra! But, my talent is only mediocre compared to Itachi, at this rate I won't be able to do anything to change the future, I will end up as a side character."
At this moment Fugaku and Itachi came out into the front yard where Ren was.
"What are you so excited for?" Fugaku asked.
"Father, I can finally feel my chakra!" Ren replied excitedly.
Bewildered Fugaku, suddenly went inside the house and came back out with three pieces of paper.
"Ren, now that you can feel your chakra, we're going to test for both you and Itachi's element affinities. The five affinities are fire, wind, lightning, earth, and water.The five elemental chakra natures are the foundation of all elemental ninjutsu. Depending on your affinities will determine what ninjutsu' you will use in the future." Fugaku explained as he handed Itachi and Ren both pieces of this paper. "These two slips of paper will react to your chakra".
"How will we know what affinity we have?" Itachi asked.
"Simple, the slip of paper will ignite and turn to ash if you have an affinity towards fire, split into two if you have an affinity towards wind, wrinkle if you have a lightning affinity, turn into dirt if you have an affinity towards earth, and finally dampen if your affinity is water. However, some people have multiple affinities, like me" Fugaku said as he infused some of his chakra with the slip of paper. Ren and Itachi watched as the paper wrinkled and then burned.
"So that means you have lightning and fire affinity?" Itachi questioned.
"Yes, now hurry and channel your chakra into your slips of paper" Fugaku replied.
Doing so under Fugaku's gaze, Itachi moved his chakra towards the slip of paper, when it suddenly wrinkled and then burned just like Fugaku's slip of paper.
"Wow, big brother! you have two affinities just like father!" exclaimed Ren "Let me try it out!"
Moving his chakra towards the slip of paper, it suddenly wrinkled but didn't ignite and turn into ash.
Looking at his slip of paper, Ren felt extremely discouraged as he could only use lightning element jutsus and wouldn't be able to use flame type ninjutsu.
Seeing how discouraged his son felt, Fugaku couldn't help but feel even more disdain for Ren.
"The proud Uchiha clan is known for their fire element, the fact that my son only has an affinity towards lightning is a disgrace to my name as the family name," Fugaku said as a cold glint flash in his eyes.