After Kasumi gave birth, Kenshin immediately received a notification of a level up. He decided to invest the free ability point into the "Formation Creation" skill, raising it to level five, first settling comfortably to digest the new information, and immediately felt mental fatigue.
There was so much new knowledge that even his sturdy mind couldn't process it in half a minute. To his surprise, there wasn't much practical knowledge among the new info, but a huge amount of theory.
It reminded him of high school chemistry lessons, when expectations of exciting chemical experiments crashed against the harsh reality of studying valence and chirality.
After fully digesting the information and resting a bit, Kenshin quickly figured out how to give the exo-suit some durability, and an idea formed in his mind about a possible way to detect psionic energy.
Jumping to his feet instantly, to the surprised gazes of his two wives and two young sons, Kenshin rushed to his office to not lose the inspiration.
The next two weeks flew by unnoticed. The Nakayama family home was filled with complete peace and tranquility. Kenshin worked, the girls tended to the children, the older sons trained, and the younger ones grew.
Many events happened during this time. On day 206, Kenshin impregnated Kasumi again, giving her a burst of joy for several days. The kunoichi from the Nara Clan revealed a new side to him. Such a domineering and aggressive girl outside the family turned out to be an incredibly caring and affectionate mother. Fifteenth was always surrounded by his mom's care and grew in the rays of love.
On the evening of day 208, Kenshin finally finished structuring the Nara Clan's taijutsu and began gradually passing this knowledge to his sons, two per day, starting with Third and Ichiro.
On day 210, Thirteenth and Fourteenth finally matured and were sent to the gym under the skilled guidance of their older brothers. Fifteenth was terribly jealous of them and impatiently awaited the moment he could become as strong as his two older brothers, with whom he had grown up.
During this time, the "Chakra Quality" stat jumped up for almost all the sons, from Ichiro to Eighth. Ichiro finally reached a Chakra Quality of 4 units, solidly stepping into Chunin rank. The rest, thanks to concentrated tea from blue sage, firmly established themselves at peak Genin rank. According to Kasumi's estimates, Aya's sons, thanks to their Sharingan, were almost on par with an average Chunin. Natsumi's sons were a bit weaker but compensated with better control and Chakra quantity.
Kenshin spent most of the day in his office, working on improving the exo-suit. He achieved very significant results. He finally figured out how to dissipate the impulse without losing coordination. By this point, the suit could dampen and dissipate the impulse from a strike not too strong for a Chunin. The exo-suit still couldn't dampen impulses from Kasumi's full-power strikes, so Kenshin could only go into full defense and crash into walls and ceilings. Those strikes weren't fully absorbed and felt like half-strength punches from an ordinary person, leaving bruises. But even so, Kasumi was in complete shock at the exo-suit's capabilities and regretted that the Nara Clan didn't have such suits.
Besides joyful events, there were some not-so-joyful ones. Kenshin still couldn't detect psionic power. He tried many methods, and under telekinetic pressure, he got only a slight hint that unidentified energy was touching the formation node. No matter how hard he tried, the formation refused to capture this energy. Kenshin was a bit upset but decided he lacked sufficient qualification in formations to conduct such groundbreaking research on detecting unknown energy.
On the evening of day 215, Aya and Natsumi gave birth again, giving Kenshin a new level. Sixteenth and Seventeenth had talent stats of 23 units, setting a new record among children from the two wives.
After reaching level fourteen, Kenshin invested the free skill point into "Shelter Creation," raising it to level four. With the new skill level, all household members finally gained access to the menu. Kenshin set several restrictions to prevent underage children from causing chaos, and also expanded his office, adding a separate room for the "workshop."
He also slightly expanded the gym and finally created a separate pool for the sons, as well as their own dining room. He decided to fully separate the "parental" and "children's" wings, making them completely autonomous and comfortable for living. The shelter's capacity increased to a hundred residents, as did the daily available food.
Additionally, he slightly remodeled the sons' rooms, housing them two per room. Each lived with the brother they grew up with, except Ichiro, who lived alone, enjoying his position as commander and the most skilled son.
By morning of day 218, Fifteenth finally came of age and was placed in the gym under Ichiro's personal training. At the moment, he was the most talented and required especially careful instruction.
On the evening of day 220, Kasumi gave birth to a baby boy named "Eighteenth," whose talent stat was slightly lower than Fifteenth's but still an impressive 33 units. Kenshin was overjoyed at such an excellent addition to the family and fulfilled all the desires of his new wife.
By lunch on day 221, Fifteenth, under Ichiro's careful guidance, finally awakened his Chakra and was immediately closely examined by his impatient father.
Name: Fifteenth
Age: 20 years
Talent Level: 36
Chakra Quality: 3
Chakra Quantity: 3400
Chakra Control: 44%
Shadow Control Lvl 1
Seeing the stats of his son who had just awakened Chakra, Kenshin was shocked. He immediately burst into joyful laughter and praised the "little one."
"Fifteenth, you're simply incredible! To have Chakra quality of three units right from the start... You're very talented," Kenshin said with a smile, and seeing Fifteenth proudly square his shoulders, added: "But that's not enough for special treatment. You're still the youngest and must obey your older brothers. Talent alone won't make you special. Only persistent effort and your personal qualities. Understood?"
"Yes, father..." Fifteenth muttered sheepishly. Over the last few months, Kenshin had grown more and more accustomed to his role as family head and was incredibly strict with his sons. All the younger sons fondly remembered their childhood when their father was affectionate and loving, for after they matured, he was incredibly strict.
"Good, you're free. Ichiro, let's go set up a sparring match," Kenshin declared, shocking Fifteenth completely. Until now, he had been sure his father was an ordinary human with no combat prowess.
Ichiro nodded silently and followed to the special, heavily reinforced room capable of withstanding a battle between two Chunin. Fifteenth tagged along behind his father and older brother but was stopped.
"If you want to watch, look through the window," Kenshin said calmly and entered.