ephemera is ryuryu's first album. It contains 12 tracks, all sung by Hatsune Miku. It was first released by KarenT, and later redistributed by the circle s10rw. Tracks 1, 6 and 12 are new.

A crossfade of the album can be heard on Nico Nico Douga.

The KarenT album is purchasable on iTunes, AmazonMP3 and KKbox.

The s10rw album is puchasable on Toranoana.

Ephemera - album illust
Released June 24, 2009 (KarenT); May 9, 2010 (s10rw)
Producer ryuryu
Price ¥900 (KarenT);
¥1,500 (s10rw)
Illust. toaii
Label KarenT; s10rw
Track list
1. Ephemera
Hatsune Miku
2. Lysosome
Hatsune Miku
3. Clockwise
Hatsune Miku
4. April Fool
Hatsune Miku
5. Charge
Hatsune Miku
6. Eclipse
Hatsune Miku
7. Sunday
Hatsune Miku
8. Last Words, Quiet Sleep
Originally known as: "サイゴノコトバ (Saigo no Kotoba)"
Hatsune Miku
9. Searchlight
Only available in the s10rw album
Hatsune Miku
10. Piano
Hatsune Miku
11. Stella Marine -little lovers' magic-
Hatsune Miku
12. Packed Memory In A Small Toy Box
Hatsune Miku
Past Present - album illust
Past Present