Artists Miyasu Risa and Hinayuki Usa joined together for their Comiket 78 release of RB16, which features a collection of newly drawn color-themed girls. Miyau Risa's solo collection Azalea Floating---which was printed after this doujinshi---actually includes a couple of the illustrations from RB16.
Hinayuki Usa is a prolific artist both in and out of the doujin scene, and Yumemi Shoujo no Yume Sen (夢見少女の夢占) was one of her two books released during Comiket 77. She often works along side Natsume Eri (なつめえり) as their styles just complement each other, but for once, this small Touhou collection includes only Hinayuki Usa's illustrations.