All three of the shuffles had a certain theme, Puripuri Pink's theme was "Pretty".
Puri puri プリプリis an onomatopoeia for “elasticity”, “flexibility” (smooth and firm texture found in things like jello, boiled eggs, and baby’s skin). Puri プリ is also the shorter way of saying プリティー (=pretty). Pink ピンク= pink color. The members wear bright pink costumes. Pink is also street slang for “adult entertainment”. Members are much older than other units from Hello! Project, so maybe Tsunku wanted to imply the unit as “well-experienced entertainers that only grown-ups can appreciate and enjoy”. Also, the sound of “Pu” プ and “Pi” ピ are poppy and fun, making the unit’s name catchy.
- [2005.06.22] Onna, Kanashii, Otona / Inshouha Renoir no You ni / Hitoshirezu Mune wo Kanaderu Yoru no Aki (オンナ、哀しい、オトナ / 印象派 ルノアールのように / 人知れず 胸を奏でる 夜の秋) - Sexy Otonajan / Elegies / Puripuri Pink
- [2005.12.21] Hello! Project - Petit Best 6 (#14 Hitoshirezu Mune wo Kanaderu Yoru no Aki)
- [2008.12.10] Hello! Project - Hello! Project Shuffle Unit Mega Best (#15 Hitoshirezu Mune wo Kanaderu Yoru no Aki)
From Tsunku’s blog:
I wanted to create a unit that consists of the original members of Morning Musume and Taiyo To Ciscomoon. “Puri Puri Pink” is a shuffle unit which consists of the first generation of Hello!Project. I created a song with a mellow groove because I wanted to accentuate gentleness of the unison vocal and express the calm unity as a group with matured members.