Ch. 221The Timing for Having Children, the Immortal Cultivation World's Good-for-Nothing
Katsuo postponed having a child with Mikoto until he awakened the Rinnegan and secretly tempered her body with Sage Chakra. He then helped Mikoto, Konan, and Kushina try to sense Natural Energy, with Konan and Mikoto succeeding while Kushina still struggled.
- Katsuo told Mikoto that he wanted to wait until he awakened the Rinnegan before they tried to have a child, and Mikoto agreed to his plan.
- Katsuo sent Sage Chakra through Mikoto's body while she slept, hoping to strengthen her physique and help her sense Natural Energy.
- At four in the morning, Katsuo woke Kushina and the others and used a Yin Release Truth-Seeking Orb to dispel Kushina's sleepiness.
- Katsuo guided the three women in meditation, silenced their hearing, and flooded the room with Natural Energy to help them sense it.
- Konan sensed Natural Energy first after an hour, and Mikoto succeeded after an hour and a half.
- After two and a half hours, Kushina had still not sensed Natural Energy, and Katsuo judged that her restless mind would make cultivation difficult.