Demon Slayer: I’m the Child of Upper Rank One

(Note: This is an original timeline spanning from the Warring States period to the early Meiji era, so most of the plot is original. There are also plenty of tearjerker moments, so read with caution. If that bothers you, this book isn't for you. The pacing is very slow. If you like it, don't hesitate to leave the author a review and help the rating go up sooner! Ensemble cast + the protagonist isn't invincible + a local + multiple pairings + immortality. However, the protagonist has almost no romance of his own; most of the story focuses on other people's relationships.)

“Why? Why won't you let me stay with Mother, Father?”

“Shut up, you twisted abomination.”

Kokushibo mercilessly threw Songjian Xue into the sunlight, leaving him to be scorched as he vanished without a trace...

Xue met an old man who looked just like his father. “Are you my grandfather?”

The old man, who called himself Yoriichi, gave an awkward smile. “If you say so.”

An accidental being, half demon and half human, Songjian Xue has a long life ahead of him. He uses a sixth fundamental Breathing Style derived from Sun Breathing, in addition to Wind, Water, Stone, Flame, and Thunder. How will he spend his life?

His silver-white blade makes him a white-clad reaper, cutting down one demon after another over the long years.

The main story spans from the Warring States period to the early Meiji era, which means everyone who appears in the main Demon Slayer story will get a happy ending. In the extra chapters, the protagonist will meet them.