Over the next few days, Tamura Hiroshi stopped visiting the Senju Clan Land and Uchiha Territory. He stayed here to adapt to the power of the Sage Jutsu Curse Mark.
At the same time, he connected the blood vessels of Manda's heart to those in his own body, stimulating his bone marrow to produce blood at full capacity and slowly filling Manda's heart with his own blood, thereby storing more blood.
That was right. This was his way of solving the Seven Day Breathing Method's short duration. Red blood cells had a limited ability to store oxygen, so he would simply increase the amount of blood.
Manda's heart cavity was enormous, capable of storing more than ten cubic meters of blood. That was enough to sustain the Seven Day Breathing Method for a long time. He could even use it as a regular technique without issue.
At the same time, Uzumaki Yuye had created an additional Sealing Technique for the two snakes and integrated it into the Cursed Seal. When not in use, the two snakes could be sealed away without appearing externally.
That was not all. Tamura Hiroshi and Uchiha Hikari also studied the Flying Thunder God Technique. He had chakra simulated by devouring components from Senju Tobirama, and had even devoured a piece of Minato Namikaze's flesh.
Uchiha Hikari possessed Senju Tobirama's heart, which she could use to refine Tobirama's chakra. All of this provided an excellent foundation.
This continued until the afternoon before the third round of the Chunin Ninja Exams, when Tamura Hiroshi once again arrived at the Uchiha Territory. As usual, he cooked and ate, behaving as though it were his own home.
"Lord Hiroshi hasn't come for a while. Have you been training?"
After dinner, Fugaku Uchiha asked.
During this period, he had been