這首歌是 LiSA 為劇場版《鬼滅之刃 無限城編 第一章 猗窩座再来》演唱的主題曲之一，由梶浦由記創作詞曲與編曲。作品以「在殘酷的夜晚依然閃耀」為核心，融合管弦與電子音效，展現宏大而緊湊的氛圍。歌詞傳遞出面對黑暗與困境時的勇氣與希望，並與劇情緊密呼應，深刻描繪角色在終極戰役中的信念與情感，感動了眾多觀眾與聽眾。

“Shine in the Cruel Night” is one of the main theme songs for Demon Slayer: Infinity Castle Arc Part 1 – Akaza’s Return, performed by LiSA and composed by Yuki Kajiura. The song blends grand orchestral arrangements with modern electronic elements, delivering both dramatic tension and warmth. Its lyrics convey unwavering courage and hope in the face of darkness, perfectly matching the film’s climactic battles and the characters’ inner struggles. Since its digital release on July 19, 2025, it has quickly topped charts worldwide, with fans resonating deeply with its message of resilience and light.