Kenshin KNEW that telekinesis could be developed through practice, but understood that this ability could never become strong enough for him to handle even one Akatsuki member within six years.
After dinner, Kenshin did a short telekinesis training session, moving small objects. From now on, he decided to do all the simplest tasks with telekinesis to hone control and power.
At the moment, it was insanely hard for him even to hold a pencil in the air. Rolling a salt shaker across the table was one thing, and lifting an object into the air quite another. But he didn't give up, and after two hours of training, his head felt like cotton again, his eyes sticking together from fatigue, so he headed to the second bedroom once more and fell asleep in minutes, deciding not to disturb the girls and let them spend this night with the babies.
On the morning of day 174, after breakfast, Kenshin told Ichiro to stay and led him and the Fourth to the living room, ordering all household members not to disturb them unless absolutely necessary.
Initially he wanted to use his own memories, but decided that memories from Ichiro's perspective would be much more effective for one of the brothers.
All three took comfortable positions, and Kenshin placed both hands on his sons' heads, repeating yesterday's words, urging them to relax.
"Ichiro, focus on Keiji. Your task is to think about him. About how he stuck in your memory from birth right up to that very day," Kenshin said calmly. Ichiro opened his eyes and stared at his father in amazement but stayed silent, closing his eyes again after a few seconds and focusing on memories of his brother.
The Fourth was also surprised but didn't show it. He had heard about his older brother who died before his birth and how it had hit his mother and father. He considered Keiji a hero who sacrificed his life protecting their beloved father.
It took Kenshin about five minutes to establish a stable connection, and the session finally began. He helped Ichiro select the right memories, guiding and supporting him in every way, transmitting a multitude of fragmented but sequential memories into the Fourth's mind.
The first was the memory of when Ichiro was first allowed to hold his fragile little brother and how joyful he felt.
Then came countless scenes of a measured family life, when Kenshin, Aya, Ichiro, and little Keiji enjoyed life, going to the river or forest almost every day.
The first encounter with a rabbit, a frightened squeal, then joyful laughter upon contact with a fish. The happy gaze of blue eyes in a child who received candy, and the glassy stare of a youth dying with a pierced heart.
As soon as the Fourth saw the last image, the telepathic link abruptly broke, and he opened his eyes, which had turned bright red with one small comma. Bloody tears streamed from the Fourth's eyes, and he breathed heavily. The seen memories struck his perception like a steel hammer, and his chest ached.
After the link broke, Kenshin winced a bit and opened his teary eyes. Though he had perfect memory and remembered EVERYTHING down to the tiniest details, it still hurt, especially seeing it from another angle. He deeply grieved for his second son, and just as the pain of loss had somewhat faded, it returned with new force.
"Congratulations, son," said Kenshin without much joy, patting the Fourth on the shoulder. "Ichiro, help him get used to the Sharingan—I'll go rest a bit."
As soon as Kenshin tried to stand, his head spun sharply, and his vision darkened. He staggered, regained coordination, calmed his rushing sons, and headed to the bedroom, this time taking Aya with him.
Once it became known that the Fourth had awakened his Sharingan, all members of the Nakayama family were thrilled. Aya glowed with happiness, Natsumi congratulated "little Fourth" and her best friend, and his younger brothers were filled with joy mixed with envy.
Kenshin rested until evening and at dinner announced that he would do one session per day and ordered the Sixth to sleep well and be ready for morning.
After dinner, he trained telekinesis a bit again and collapsed exhausted once more, falling asleep separately from the girls. He needed absolute rest, so he deliberately went to sleep in another room.
Kenshin understood that the first few days or weeks were the hardest—his brain needed to adapt to the harsh loads and become many times more powerful. He KNEW it was relatively safe, and it would take great effort to get injured from overstraining his psionic powers. For that, he'd need to either forcibly break into a strong-willed person's mind or strain his powers and "jump ten times over his head."
The next day after breakfast, Kenshin repeated the "session" with the Sixth, but without Ichiro. All the necessary memories were in his head, so he transmitted them to the Sixth's mind without trouble.
Everything went the same as the first time, with minor adjustments. Kenshin slightly altered the memory transmission, sequencing them to make it as heartbreaking as possible. He didn't like such a cynical approach himself, but for awakening Sharingan in his sons, he was ready to step beyond his principles.
At the end of the session, the Sixth abruptly opened his eyes, from which bloody tears flowed, and his iris turned red, becoming a classic one-tomoe Sharingan.
Kenshin was morally drained, so he congratulated the Sixth without much enthusiasm and went to rest.
This time he recovered a bit faster than before, so shortly before dinner he trained telekinesis, trying to hold a small apple in the air. Even this trifle, in his opinion, was incredibly hard for Kenshin.
The moment he got slightly distracted, the apple fell onto the bed, requiring at least a second to refocus and lift it again.
Aya and Natsumi had already recovered from childbirth and were hinting in every way that they were ready for a new pregnancy, but Kenshin had no time for that. His brain was in an active phase of transformation and adaptation to the new abilities, so he felt fatigued almost all the time.