Chapter 25
The constant use of his abilities, especially the assimilation of foreign biological traits like the Hatake senses, began to have a cost. At times, his senses would overload, smells and sounds becoming a painful barrage. His chakra pathways, strained from manifesting complex copies and running dual-nature experiments, would ache with a deep fatigue.
Tobirama noticed his occasional pallor and headaches. Using his burgeoning medical and fuinjutsu knowledge, he developed a series of chakra-suppression and regulation seals for Itama to wear. They acted as dampeners, helping his body integrate the foreign data and preventing his own systems from going into shock. It was a constant balancing act—his power was vast, but the vessel was still that of a young Senju boy.