Will of Black Flames

The Will of Black Flames(志黒い火の手,Koroi hinote no Ishi) is a philosophy believed by the shinobi of Hakkingakure. It is an ideal rooting from the belief of Mategai Ryou that even in death you live on in the next generation. It would eventually become the life philosophy which Sen Uchiha and the other clans live by, which has since been passed on to many ninja from Hakkin as a part of their spiritual heritage. It states that life truly is not gone, but has been transformed into something else and that the people you love live in you and the cycle will start over you are born, you fight, and you die but you still live on in the hearts of loved ones and future generations.

there is a lantern that hold the black flames in the cemetery representing this will. According to Mubi Ryou, this is what gives Hakkinhagakure shinobi the strength to continue fighting despite all odds, building willpower.