Sangatsu no Phantasia is a Japanese musical unit formed in 2015 and centered on vocalist みあ. Built around J-pop with pop-rock touches and a delicate, atmospheric approach to songwriting, the project has become a familiar name for listeners searching for anime songs and modern Japanese music with an emotional edge. Its sound often balances clear melodies, soft textures, and strong hooks, which gives the group a distinctive place in the anime-anison scene.
Since its formation, Sangatsu no Phantasia has continued to stay active with releases tied to anime and related music videos. In 2025, the unit released "あまのじゃくヒーロー" digitally and also confirmed the coupling track "うたかたの声." Later that year, it released the music video for the ending song of Inexpressive Kashiwada and Expressive Oota, reinforcing its connection to anime theme songs. In 2026, Sangatsu no Phantasia followed with "風、光る。" and its music video, alongside news of its first planetarium live, showing an ongoing interest in pairing music with immersive visuals and storytelling.
