I don't understand how some people are saying that Kakashi's story wasn't as sad as the others..
1- Most likely his mother died giving birth to him based on the fact that his father said that no one died as young as her and there was no memories of her at all.
2- At the age of 4 his father has been disgraced for doing the right thing which is saving his friends and the whole Village looked down on him and treated them like trash which drove sakumo into severe depression
3- Few months later his father who was all he had killed himself and Kakashi a 4 years old child was the one to find his corpse and report his death to the Hokage, in Sakumo's funeral 4 years old Kakashi heard everyone at the funeral trash talking his father calling him, weak, traitor, disgrace including the friends he saved, they literally said "first he abandoned his mission then he committed something so weak as self harm, what a disgrace, we didn't even ask him to save us"
4- The village treated him as a son of a traitor which forced him to act only by the rules in fear of being like his father he forced himself to leave all of his emotions and childhood behind.
5- At this point Naruto and Sasuke had the 3rd hokage kinda looking after them (although he did a bad job at it) then assigning iruka to look after Naruto but Kakashi had no one at all he had to go fishing everyday in order to survive because he couldn't afford to buy food, he taught himself to cook from books and eat the fishes he cought himself everyday.
6- When he finally tried to let go and feel like he had friends and people who cared about him he was put in the exact same situation that killed his father choosing between the mission that would stop the war or his friends, his friend (Obito) died saving him telling him to protect the girl he loved (Rin) as his dying wish and giving him his eye which constantly reminded him of the pain he felt that day.
7- Few months later the girl who was his only friend now (Rin) and who he promised his dead best friend (Obito) to protect chose to use him as a weapon to suicide, the Sharingan forced him to see Rin's blood on his hand everytime he looked at it.
8- Drowning on his pain, self beating, guilt, nightmares and waking up to see Rin's blood on his hand that wont wash off no matter how hard he tried like all of that wasn't enough agony his sensei who was the last person remained of the closest thing to family he had also died leaving him all alone drowning further into his depression.
9- he had PTSD and severe depression for more than 10 years, he wanted to die but he didn't wanna die the same way his father died so instead he was taking the most dangerous solo missions in Anbu hoping that one day the enemy would out number him ad kill him
10- When he finally saw a little hope by teaching team 7 and getting to love them Sasuke left the village and yet again he blamed himself for something that wasn't his fault and felt like he lost yet another loved one.
He spent his whole life suffering between the graves of all the people who had been precious to him.. he almost lost everything and everyone he loved. He never had a childhood at all and as an adult he tried so hard to distance himself from the world and hide his pain behind acting nonchalant which wasn't how he truly felt because he was afraid of getting too close to people just to end up losing them again not only that, his friend that he spent his whole life idolizing and living by his memory turned out to be the master mind of the biggest terrorist organization and declared the war, he had to fight him then watch him dying all over again.
