Demon Slayer: Ice Wings Across the Sky

(No System, not invincible, multiple heroines)

Asagiri Soma was injected with demon blood, yet miraculously never turned into a demon.

After languishing in the Demon Slayer Corps for three hundred years, the half-human, half-demon finally got his chance during the Taisho era to defeat Muzan and avenge himself and his family.

Kanae: “Mr. Asagiri, come back soon.”

Shinobu Kocho: “Ice cube, hurry back so we can eat.”

Kokushibo: “He's the strongest swordsman I've ever seen aside from Yoriichi Tsugikuni.”

Muzan: “Don't come any closer!”