"Shin Ruriiro no Yuki" is a short anime series that adapts a story from the "Ruriiro no Yuki" visual novel series. The narrative centers on a young man named Shuuichi, who moves to a rural town to live with his aunt after the death of his parents. The town is known for its serene atmosphere and a mysterious legend surrounding a local shrine. Shuuichi becomes entangled in the lives of the townspeople, particularly with three sisters: Ayaka, Satsuki, and Yayoi. Each sister has a distinct personality and connection to the town's folklore.

Ayaka, the eldest sister, is reserved and deeply tied to the shrine, embodying a sense of duty and tradition. Satsuki, the middle sister, is more outgoing and energetic, often acting as a bridge between Shuuichi and the town's customs. Yayoi, the youngest, is shy and introspective, harboring a secret tied to the legend of the shrine. As Shuuichi grows closer to the sisters, he uncovers the truth about the town's legend, which involves a tragic tale of love, sacrifice, and supernatural elements. The story explores themes of family, memory, and the interplay between the past and present, as Shuuichi navigates his relationships and the mysteries surrounding the shrine.

The plot unfolds through a series of emotional and introspective moments, blending slice-of-life elements with supernatural undertones. The characters' interactions drive the narrative, revealing their vulnerabilities and connections to the town's history. The anime maintains a contemplative tone, emphasizing the emotional weight of the characters' choices and the impact of the legend on their lives. The resolution ties together the personal and supernatural threads, offering a poignant conclusion to Shuuichi's journey and his relationships with the sisters.