At a young age, Hatake Kakashi appears as a cold, composed, and extremely serious ninja, whose approach to missions can be described as uncompromisingly professional. Having become a jonin at the age of twelve, he wears this title with pride, but also with a certain arrogance — he knows of his genius talent and does not hide his contempt for those who cannot meet his high standards.
His worldview in this period is shaped by the heavy trauma of his father's death and the subsequent self-isolation. Kakashi strictly follows the shinobi rules, believing that the success of a mission is more important than the lives of his comrades. This philosophy is manifested in his cold ability to make difficult decisions and his detachment in communication with the team. He rarely shows emotions, preferring an analytical approach to any situation.
At the same time, despite his outward insensibility, deep down Kakashi still remains a boy who lost his father and does not wish to lose anyone else. His intellect and tactical thinking abilities set him apart from his peers, however, it is Obito and Rin who gradually begin to break down his emotional walls, forcing him to reevaluate the true value of human connections.