The episodes that focus on Kakashi's back story are mainly in the arc where his past is explored. But it's a bit hard to pinpoint specific ones exactly.
Kakashi's back story is gradually revealed throughout the Naruto series. You'll get to know more about his past as the story progresses.
Well, one main event is his relationship with his father. His father was shamed for choosing to save his comrades over a mission. This had a big impact on Kakashi. Another important part is his time with Obito and Rin. Obito's 'death' was a turning point for Kakashi, and he got his Sharingan from Obito then.
The key events in Kakashi's back story start with his father's misfortune. Sakumo Hatake's death left Kakashi with a sense of duty and the need to be a perfect ninja. Then, the mission where he, Obito and Rin were involved. Obito's sacrifice and Kakashi's gain of the Sharingan. His time in ANBU, which exposed him to the darker side of the ninja world. And later, his role as a mentor to the new generation of ninjas, like Naruto, Sasuke and Sakura.
Well, Kakashi's back story involves his early days as a ninja. His father's death had a huge impact on him. He was then trained hard to be a great ninja. He was put in a team with Obito Uchiha and Rin Nohara. During a mission, Obito 'died' (or so it was thought at first) and Kakashi got his Sharingan. This event also added to his complex character. He had to deal with the loss of his friend and the new power he got. He later became a mentor to Naruto and his friends, using his own experiences to guide them.
" In Nightmare Times " is a mystery detective and mystery adventure novel written by the author, Yao Gu. The general plot of this novel is: I have a secret that I can't tell anyone, but I really want to talk about it, but everyone tells me that the secret should rot in my stomach. My world is grey. The sunlight reflected on my body is just my armor in disguise. I've long been a walking corpse. No one cares about what I've experienced. Those people only care about their own happiness and so-called face. I once had him, but I lost him later. I am Fang Yun, an intern lawyer. I have a secret and countless dreams. "Do you have a dream?" he asked. "Yes, a lot." "Has it all been realized?" She said," Dream and reality, one is the soul, the other is life. When life is good, the soul will naturally be settled." He liked her and thought that he would never see her again in this life, but he still looked forward to it and insisted on waiting. He smiled and told her,"With perseverance, dreams will definitely come true. You are my dream…" ---------------------------- The book," Nine Layers of Dreams," was a novel written by the author, Morning Dream Today. The general plot of the novel was: After waking up from a dream, Chang Meng realized that the nightmare had become reality and began to erode his life. In his despair, he obtained the method to control the dream realm and participated in other people's dreams time and time again. The crime scene that had reappeared…the Seeker who had attempted to become an immortal…In some dreams, Chang Meng had seen the truth, while in others, he had seen what he thought was the truth. And the cruelest truth was still waiting for him… ---------------------------- " Mysteries in Dreams " was a mystery detective and horror novel written by Mystery House. The general plot of this novel was: I didn't know if this was real or a dream! ---------------------------- " Dreamsong " was a fantasy romance novel written by the author, Night Dance Spirit. The general plot of this novel was: What couldn't be realized in reality, how about realizing it in dreams? If he couldn't get it in reality, how about searching for it in his dreams? Reality was always cruel, but if there was a dream that could change everything, would you be willing to give everything? Eight stories, eight kinds of love, there was love, there was hate, there was obsession, there was resentment. 。 ---------------------------- The Fiancée's Lies was a modern romance novel written by the author, Nine Stars. The general plot of the novel was: The playboy young master of the Lou family had forced the daughter of the Meng family away. She had pretended to be the other party's fiancée because of a sky-high necklace. There was always a time when a lie would be exposed, but his heart had lost its direction? "Qin Xuan, I will make you pay the price." The plot is fictional, please do not imitate it. ---------------------------- " When Dreams Come to Reality " was a mystery detective novel written by the author's pen name. The general plot of the novel was: Everyone had dreams when they slept at night. Whether you remembered it or not, you had experienced countless dreams since you were young. And one day, when your dream came true, what would happen? What kind of stories would Chu Meng encounter in the dream world and how would it affect her real life when she had a dream world support system? There was a saying about dreams. Every dream was a real world. If you didn't notice it after you woke up, it wouldn't affect your life at all. When you slowly woke up from the dream, it would also wake up in reality. ---------------------------- " Who's Lying " was a mystery detective novel written by the author, Zui Mu Zi. The general plot of this novel was: Do you feel that your life is like a dream made up by someone? One day, your boyfriend mysteriously disappeared. One day, your good friend mysteriously jumped off a building. One day, you have to go to a place where everyone says there are ghosts to carry out a mission. What would he do? Who pushed you to the cusp of the storm? Who was lying? ---------------------------- " The Dream of Two Generations of Wuming " was an ancient romance novel written by the author, Yama. The general plot of this novel was: [Friendly reminder: Don't fall in love with the female protagonist. The female protagonist has never been a good person.] It was the same for her in reality. The female protagonist's seventh brother sent her off in a long and short dream. She originally wanted her to reunite with the male lead, but who would have thought that even in her dreams... In the dream, it was as if he had been reborn. The time he spent together was always so beautiful. It was as beautiful as fireworks and could only be dazzling for a moment. Wasn't love like this? It was a scam of mutual consent. It's just that the person you want is lying to you. Or the person who lied to you is exactly what you want. However, this scam had always been fair. Regardless of whether one was deceived or cheated, one had to rely on their own abilities. A liar had to find the right person. Those who were deceived had to wait for the right person. No matter what the result was, he had brought this upon himself. Don't complain. There was no logic in this article, and it was absurd. There was no white lotus, no Virgin Mary, this article was actually a story of extreme joy turning into sorrow. ---------------------------- " Dreambook Xuhua " was a modern romance novel about urban life written by the author, Xiushui Wuhen. The general plot of this novel was: Life is like a dream, The past is like smoke; Great love is boundless, Dreams are illusory… ---------------------------- " Dream Chasing Life: Inside and Outside Dreams " was a fantasy romance novel written by the author Yue Yingling. The general plot of this novel was: Dream Seeker was originally a carefree sophomore. After accidentally obtaining a mysterious jade pendant, he was entangled in a complicated dream. In the dream, she was Meng 'er, the daughter of a god, and outside the dream, she was Dream Seeker, the lucky star in her parents' hearts. Who was the real her? Was the God of Light in the dream and the Prince Charming outside the dream the same person? What kind of fate would the truth she was pursuing bring her?
Kakashi has appeared in Naruto many times. The following are some of the related episodes and titles: 1 Naruto Stormy Legend, Chapter 158-Kakashi, Chuunin Test, Fourth Generation Naruto Naruto Stormy Legend Chapter 160-Thunder Master, Kakashi, and the Battle with Thunder Shadow 3 Naruto Stormy Stormy Legend Chapter 161-Memories of Kirikigami Village, Kakashi, Kaido and Lin Naruto Stormy Legend Chapter 162-Kakashi, Uchiha and the Earth, Kakashi's Past Naruto Stormy Legend, Chapter 163-Hatake Kakashi, Sharunan, Kakashi and His Friends Naruto Stormy Stormy: Chapter 164-Thunder Master, Kakashi, Battle with Thunder Shadow Naruto Stormy Stormy Legend Chapter 165-Kakashi, the Chuunin Test, and the Truth of Kirin Village Naruto Shimbun Chapter 166-Kakashi, Uchiha and the Earth, Kakashi's Past Naruto Stormy Legend Chapter 167-Memories of Kakashi, Lin, Dai Tu and Kakashi Naruto Stormy Legend Chapter 168-Kakashi, Thunder Master, Battle with Thunder Shadow Naruto Stormy Stormy Chapter 169-Kakashi, Uchiha Sasuke, Kakashi and His Friends Naruto Shimbun Chapter 170-Kakashi, Thunder Master, and the Battle with Thunder Shadow Chapter 171: Kakashi, Kirin Village, and the Death of the Fourth Generation of Naruto Naruto Stormy Stormy Chapter 172-Kakashi, Sharunan, Kakashi and His Friends Naruto Stormy Stormy Legend Chapter 173-Kakashi, Chuunin Test, Thunder Nation's Invitation
Kakashi's back story influenced his character in multiple ways. The death of Obito and Rin filled him with guilt and a sense of responsibility. He started to value his comrades more, which was a big change from his earlier more mission - focused self. His experiences also made him more empathetic towards others. He saw the pain and loss that war could bring, and this changed his approach to both life and combat. He became a more complex and nuanced character as a result of his back story.
I think it's in the episodes from season 3. But to be exact, you might have to check the show's official guide or online forums dedicated to it.
Sorry, I don't have that specific information. It could vary depending on how the story is developed and presented. Maybe try looking on dedicated fan forums or the show's official website.
I'm not exactly sure which episode it is. You might have to look through the series to find out. Maybe start from the middle seasons and work your way through.