So today is my birthday and from today I will start training for basketball and also make my body strong enough to handle the strain of the play without effecting my growth and that is because all of the players from the Generation of Miracles have one commonly known weakness: while they all have talents surpassing the capabilities of regular high school sportsmen, they still have a high school boy's physique. This means that should they use their talents to the maximum limit for an extended period of time, their growing bodies can't cope with the overexertion and their talents become more of a burden than a gift. In other words: their strengths can also be their weaknesses.
For example, Kise injured his leg as an effect of copying Aomine's formless shot non-stop. Aomine has also injured his elbow according to Momoi because of his clash with Kise and wasn't allowed to play in the finals against Rakuzan. Murasakibara could not jump in the last seconds of their match against Seirin because he continued to jump with his huge body when Kiyoshi played point guard and his knees couldn't handle the strain of playing for so long. Also, Midorima admits that he can't keep shooting his long-range shots forever because he knows his limits.
mother-yurei ,tetsu come down fast don't make me scold you on your birthday alright
yurei-okay mom I am coming fast. hey brother let's go
tetsu-hai brother
After that they went to a expensive hotel to celebrate their birthday and amusement park to play too .When they were returning it was already dark. Tetsu got a drawing copy well he was just 4 years old and from what I know he got interested in basketball only in fifth grade. So for my gift I got basketball.
Flashback///
mother-so yurei what do you want for your gift?
yurei-mom I want a basketball
father-oh!! and why do you want that ?
yurei-I want to be the greatest basketball player(well I just want to kick the a*s of the generation of miracles and jabberwock )said yurei with brilliant fake determination in his eyes
His father was shocked to see such determination in his son's eyes so he thought that his son was really serious about being a basketball player so he took it seriously too.
father-alright son tomorrow we are going to visit my friend so he can start teaching you about basketball
his mother nodded too.
yurei was shocked that his father agreed so easily and his mother too
yurei-thank you father and mother
The next day his father and him went to his father's friend named Kaito
Kaito-Ah hey and what are you doing here haruto(father)?
father-you are still like always getting straight to the point eh kaito
kaito-haha so what brings you here at my basketball gym?
father-this is my son yurei!
yurei-hello uncle kaito my name is Yurei Kuroko
kaito-haha what a polite young man THIS IS YOUTH(might guys style//)
father-so yurei here wants to play basketball and he's serious
kaito-is that so?"while giving a devil's grin"
yurei-hai I want to be the greatest basketball player
kaito-then we will start now go change and run 2 laps and do 10 push up and sit up and stretching
yurei-hai
After the exercise yurei sweating balls well what do you expect from a 4 year old kid
kaito-now let's see if you have any talent
saying that he made yurei do some basic moves in basketball and had him 4 hr time limit to use them in a good manner but yurei managed to do that in 2 hrs only which made kaito happy to see that he was very talented
kaito-alright start coming from tomorrow and we will start training for real
yurei-hai!thank you
kaito-it's alright kiddo
father-come fast we've gotta go home fast
yurei-coming!!
while haruto was driving back home yurei was wondering if kaito was some basketball big shot.
yurei-father is Mr.Kaito a famous basketball player.
father-yeah he was one.
yurei-what do mean?
father-he was actually a national player for japan who took our country too tall heights as a captain but due to a massive injury of having a lower rib broken so after that accident he stopped playing basketball you had he had a moniker when he was in his days which yurei!
yurei-is the accident related to me or something father?
father-you are too smart for a 4 years old kid aren't you?sigh!!yeah he got the injury because he saved your mother from the accident when you and tetsu were in her womb and after that we became best of friends and even got you his name as you were the older one and from the looks of it he has chosen you the successor for his playing style and moves so be ready
yurei-hai(with his moves and my kamui I will be kicking their ass pretty soon
\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\Timeskip 13 years////////////////////////////////////////////////////