Demon Slayer|Kimetsu no Yaiba - One More Light [AMV]

Anime: Demon Layer / Kimetsu no Yaiba Song Title: One more light by Linkin Park Nezuko is very protective of her brother, and being the sole surviving members of a poor family, the siblings are very close, trusting and loving of one another. He is likely the only one capable of actively calming Nezuko down by calling her name or singing to her their mother's lullaby.