Demon Lord Shapeshifting System - Chapter 1 Fresh Meat

William watched his family get slaughtered at the dawn of the Apocalypse.A demon placed his brother’s beating heart on his lap before death claimed him.for reasons unknown to him, he woke up inside a novel with a strange yet powerful system bound to him.“For all the demons in existence, I will be their End”“or the one behind the apocalypse, I will become the apocalypse itself”----------------------PACING: Stakes will be high, pace will be on the faster side.HAREM INFO:#no Yuri and no incest, not NTR, not all women will be part of mc's harem, and the harem will not be a Pokémon collection, every Fl will be developed and will be given attention.DISCORD SERVER (ASK ME ANYTHING HERE): https://discord.gg/8M4SyARCYQ

I originally thought this was a world like an ordinary urban novel…Drawing comics by myself, traveling is pretty good.
But tell me, what happened to this magician called “Emiya Kiritsugu” who jumped on my face?
Who changed the settings?
Currently involved in the content of “F/Z”, “F/SN”, “Fantasy Carnival”, “The Emiya’s Meal”, “The Holy Grail of the Imperial Capital”, “FLA”, “Elmello II Event Book”, “FGO”, “FE”, etc.
Others related to “JOJO’s Bizarre Adventure”, “Rebellious Lelouch”, “Persona 5”, “Attack on Giant”, “Death”
“FGO”, “FE Series”, “FA”, “FSF”, “Cangyin”, “Magical Girl Illya” will be involved next…

- Description from novelbuddy

Venshiro, a young ronin bound to the Black Vein Blade, is hunted by clans who would kill for the curse he carries. Every time he draws the sword, it takes something from him—his memories, his soul. But the blade remembers everything.And now, it wants more.

Reborn as the ill-fated Third Kazekage from the original series, I am determined to rebuild Sunagakure into the strongest Hidden Sand Village through tireless effort and visionary leadership. My goal is to survive and thrive in the recurring Shinobi World Wars.I will show these ninja, who are obsessed with slaughter and conspiracy, what true 21st-century wisdom and modern governance look like.The world of ninja is not a story written solely by Konoha.