Demon Slayer: the Strongest in Modern Times Vs. the Strongest in History

The memory of my previous life was revived, and I personally beheaded my ghost-turned-mother! Reincarnated as the eldest son of immortal Sichuan, my poor but warm family is my only treasure. The vague memories of my previous life made me appreciate things more, and I was willing to use my thin body to support my family's livelihood and block the punches of my alcoholic and scumbag father. Until that bloody dusk - my mother turned into a ghost and slaughtered her brothers and sisters! In order to protect the only remaining Saniya and Genya, I picked up a hatchet and fought to the death. When the morning sun rose, the "evil ghost" who fell was actually my beloved mother! "Brother killed my mother——!!!" Xuan Mi's cry tore through the sky. "Traitor! Murderer!" Shimi's hateful eyes pinned me to the spot. At that moment, the belated knowledge of the original work of "Demon Slayer: Kimetsu no Yaiba" suddenly poured into my mind! If we had woken up a moment earlier, this tragedy could have been avoided! The overwhelming regret and the murderous intention towards the real culprit "Kibutsuji Muzan" completely burned! Leaving behind the hated ruins, I turned into the evil wind of revenge. In the mountains where vines are attacking, I stand side by side with the future "rock pillar" Mingmingyu Xingming; in the swordsmith village, I am grabbed by the collar and scolded by the angry swordsmith. The broken sword was reforged, and with three exclusive Nichirin swords in hand, I killed ghosts at a speed beyond the limit until I reached the top of the "Wind Pillar"! However, when at the meeting of the pillars, Saniya, who had become the "Wind Pillar", and Genya, who had joined the Demon Slayer Corps, looked at me with eyes as if they were enemies—— Should this Fengzhu, who kills his loved ones and carries endless regret, atone for his sins under his younger brother's sword? Or should we kill all the evil ghosts in the world and wash away this despair with blood...?