Chapter 305: Tsunade's Disbelief
"I am indeed using children with half of the Senju bloodline for my experiments," Orochimaru said.
"Tsunade, don't look so shocked.
"You only need to know that I didn't start this research from scratch. When I took over the laboratory, it had already amassed a considerable amount of research data.
"My data comes from the Second Hokage, Tobirama Senju.
"During the Second Hokage's administration, the village began attempting to recreate Wood Release due to the pressure of the first great ninja war.
"Tobirama Senju experimented with the corpses of sacrificed Senju clan ninjas, but progress was slow, and he was never able to reach the most crucial transplantation phase.
"Later, Tobirama Senju recruited volunteers. Some members of your Senju clan willingly served as test subjects for the Wood Release research.
"It truly is miraculous...
"Even after decades, Senju Hashirama's cells are still alive and active.