Into the Night - YOASOBI Stories Collection is an anthology of five short stories that directly inspired the hit songs of the Japanese musical duo YOASOBI, known for transforming narrative fiction into music. Each story stands alone as a complete work, offering the original prose that served as the foundation for a corresponding song. The collection opens with Thanatos no Yuwaku by Mayo Hoshino, the dark psychological tale behind YOASOBI's debut single Into the Night (Yoru ni Kakeru). It follows a young man drawn into a rooftop encounter with a woman who tempts him toward a shared suicide, exploring themes of despair, fate, and the seductive pull of oblivion. The remaining stories—Tracing a Dream by Shinano, Probably by Shinano, Encore by Sota Ishiki, and Halzion by Kanami Minakami—similarly cover varied emotional territories, from bittersweet romance and the ache of missed connections to nostalgic reflection and the search for meaning in ordinary moments. Written by Mayo Hoshino, Sota Ishiki, Shinano, Kanami Minakami, and Shunki Hasizume, the collection also includes illustrations originally created for the songs' music videos, previously exclusive to Japanese special editions. The narratives are linked not by characters or setting but by their shared role as the literary bedrock of YOASOBI's music, inviting readers to experience the unadorned stories before they were set to melody.