It had been two years since his family was massacred, the night in which his younger sister turned into a demon. He was a kind soul without a doubt, it could be said that he is too pure for that cruel world full of demons and death wrapped in it.

Although two years had passed since then, resentment and pain continued to torment him constantly, although he always smiled to cheer others up, he himself was not able to be happy, he still tries to be happy for his younger sister, but he was not able to feel any other way.

His constant struggle to forgive was slowly beginning to break him more than before, his soul slowly being torn apart by the hurricane of resentment, hatred and pain that intensified as the days went by.

Tanjiro couldn't forgive what Muzan Kibutsuji did to his family

It was impossible to forgive such a thing...

Tanjiro walked under the gloom of the night, prowling through the gloomy forest while gasping for air slightly, he was tired, he had one or two broken ribs, he had cuts everywhere, some deeper than others, like the cut on his stomach, it was deep and bleeding too much, his arm covered the wound in an attempt to stop the bleeding. The red of the blood stained his checkered haori and his uniform, he wanted to stop, his legs hurt from walking so much, he wanted to just let himself die, but he stayed standing only for his sister.

Fatigue and days of lack of sleep began to take their toll on his, his legs wobbled and he fell to the ground on his knees, with his free arm he held himself up so as not to hit himself any more, his reddish eyes stared at the ground and without realizing it the tears began to flow down his bruised cheeks, he felt helpless as he said to himself "Forgive me Nezuko..."