Hoshi to Umi no Märchen

Look up at the stars floating on the sea. Surely, there are stories there that you don't yet know! Don't you want to learn about the unknown faces of the sky and the secrets of the sea? A seamstress stitching the starry sky, an angel who becomes a 'favorite,' and mermaids who fall in love with humans. A part of their lives have always quietly intersected with us.

(Source: Kadokawa, translated)