[5] The two would continue to meet like this to train and discuss prospects of the future. During his time as Hokage, Hashirama came into possession of a scroll filled with, among other skills, various kinjutsu, which he sealed away in order to keep the techniques within it a secret. When the remains of Kawarama's body were retrieved, it was buried alongside other fallen comrades, in a coffin etched with the Senju symbol on it.

Butsuma would later discover that Hashirama was meeting with Madara, having sent Tobirama to trail his elder brother. While in the village, Hashirama tended to wear the traditional Kage attire consisting of the customary hat and haori over a full-length gown, along with a simple red headband. After the deaths of their brothers, Kawarama and later Itama, Hashirama and his remaining brother, Tobirama, decided a new shinobi system would need to be implemented to end the cycle of child deaths, a system that would require an alliance between the Senju and Uchiha.Like Hashirama, Madara was also a shinobi who had lost brothers on the battlefield. [34] He would later discuss this concept with Madara when he met him on the riverbank once again after the death of Itama. After Madara accosted Hashirama, he began to sulk and told Madara that to atone for it, he would allow Madara to skip him across the river, but then sneered and noted that he prayed that he would make it across. [8] Each collar of his shoulder guards bore the Senju symbol emblazoned on them. However, Madara refused to accept such a proposal unless Hashirama took either his own life, or that of his brother Tobirama. [8] The villagers selected Hashirama over Madara for the title of First Hokage. As a pacifist, he started training in Medical Ninjutsu at the age of 16 in the Konoha Hospital. He cried. Hashirama was shown to be a kind and caring person with a deep sense of loyalty, great charisma, and skill in negotiation. Though he despises violence, Kawarama is a natural prodigy in the shinobi arts, praised as one of the best of his generation. He was born as the eldest of Butsuma Senju's four sons. This put him in odds with his brother, who was more of a realist and was still wary of the Uchiha, seeing them as a threat to Konoha because of their unpredictable emotional states, despite the fact that Hashirama told his brother to not discriminate against the Uchiha countless times. His early childhood was marked with violence, when he was only five years old, the Crimson Lotus destroyed Konohagakure and he witnessed firsthand many of the war's casualties. Soon after, while attending the burial of their brother Kawarama alongside his younger brothers Tobirama and Itama, Hashirama got into an altercation with their father over what he considered to be the pointless death of Kawarama.

[42] The most common example was his ability to not only fight on equal footing with Madara despite the latter possessing an Eternal Mangekyō Sharingan and having control of the Nine-Tails, but also survive the battle and ultimately achieve victory against his former comrade and adversary. [17] Thinking about the future of Konoha, he also trained the young Hiruzen Sarutobi, one of his brother's team members. He would later go on to become the village's First Hokage (初代火影, Shodai Hokage; Literally meaning "First or Founding Fire Shadow"). Then, stood up. He wore a light-coloured attire with a short jacket, a light scarf around his neck, and a dark-coloured sash around his waist.

[22] He always gave people the benefit of the doubt witnessed when he proposed a truce with the Uchiha, considering them allies immediately, even when Madara attacked the village, Hashirama did not allow this to colour his view of the other Uchiha in the village even still considered Madara a brother. He was also shown to be a very wise and insightful man, as he passed on great teachings to Hiruzen. He would later go on to become the village's First Hokage (初代火影, Shodai Hokage; Literally meaning "First or Founding Fire Shadow"). [29] While in the same breath when necessary, he was capable of being overbearing and not above using force to make his decision clear, as seen when he forcefully reprimand Tobirama to stop him from attacking Sasuke and his group,[30] and some time before to stop him from killing Madara. Hashirama reluctantly agreed. [20] When they were kids, Hashirama and Madara cared about each other so much that they purposely leaked information to each other about a trap that their respective clans laid out.