Leo: "What are we going to do?"
Nardo: "The same thing we always do."
Leon: "Fight our hardest to stay with you."
Leonardo: "Even if it takes a while. We are coming back to you."
Leo: "Thanks, guys."
Splinter: "Alright. Just as before, my son. Seperate until you can't hear each other. Then, until you can't see each other. And finally until you can't feel them at all. Then, we shall begin our 10-hour meditation session."
Leo: "Hai sensei."
Leo: 'Alright, guys, you know the drill. Hearing, then sight, then presence.'
Leon: "This is so going to suck."
Leonardo: "Yup, but at least we're stubborn."
Nardo: "We got this."
Slowly, one by one, Leo couldn't hear them, couldn't see them, until finally he couldn't feel them.
Leo: "It is done sensei."
Splinter: "Good, good, then let us begin."
As the session wore on, Leo could feel himself start to shake little by little as his soul and mind were pushed past their limits. Slowly, the time tickled by, and with each hour that passed, the worse the shaking got. And still Leonardo stayed in meditation.
Splinter looks at his son meditating and feels pride for how well he is handling the mental strain. Completely unaware that his soul is also being strained. As the hours tick by, he watches as Leonardo starts shaking more and more but not coming out of meditation just like he trained him to.
Splinter: 'I am so proud of you, my son.'