"Perfect Garden~ロマンスニフレ~" (Perfect Garden ~Romance Touch~) is a compilation of various artists, with the main organizer Wonderful☆Opportunity. It comes with an 80 page doujinshi book featuring 6 artists, some notable ones being Zashiki Usagi, Iri, and SHARK. It consist of 6 tracks, both new and old, and was first distributed in VOC@LOID MASTER 16. It is available at Toranoana.

A crossfade of the album can be heard here, and this is their official site.

Wanopo Album
Released May 8th 2011
Producer Wonderful☆Opportunity
Price ¥1,200
Illust. SHARK
Track list
1. ロマンスニフレ
Kagamine Len
2. incubus
Kagamine Rin
3. Romance Touch (house mix)
Kagamine Len
4. ロマンスニフレ off vocal ver
5. incubus off vocal ver
6. Romance Touch (house mix) off vocal ver