Ever Blue is a duochrome glass fleck top coat, meant for layering over other polishes. It shifts from blue to violet, flashing pink at the extreme of the color range.
Ever Blue is named after character Hanon Hosho's image song from the anime series Mermaid Melody.
Rather than offering sets, purchasing three or more bottles of polish from the Mermaid Melody collection in a single order will give a discount of 3.5% on all Mermaid Melody collection polishes in the order, which will be reflected in the cart under the line "Mermaid Melody collection discount."
The last photo shows what Starlight Polish 15mL and 7.5mL bottles look like.