Rosa EX

The Rosa EX Series is a series of XJR-designed double-locking zip-up thigh-high ballet boots named after Rainbow Angel Rosa Copeland. Multiple designs exist in it, all sharing the thigh-high, double-locking zip-up style.

Origins
At some point before 2123 XJR was commissioned to design the first Rosa EX model, most likely by Rosa herself. Because the original commission date is unknown, the very first pair made might not be the white pair ZVE Rune Angel Tequila Brazie was forced into as punishment for her role in a scheme that almost killed teammate Anise Davies. (Tequila, who later tweaked her name to Takara, was revealed by Anise six months later to be a Rainbow Angel, and upon getting her own body made the ballet boots permanent - to the point that in 2304 she and another Rainbow Angel permanently in a Rosa EX ballet boot, Faye Jordan (a redhead based on Lavaridge Gym Leader Flannery in a red pair, Faye's unknown Bonding date being why Tequila's white pair might not be the first-ever Rosa EX), both transitioned to Series 500, a Rainbow Angel Series mandating Rosa EX ballet boots (with the series number being a tribute to Rosa's own Rainbow Angel designation; to avoid confusion Takara switched her designation number from Rosa's 500 to her Rune Angel designation number of 4)).

Known models

 * Rosa EX (basic): generic Rosa EX thigh high ballet boots, the only series model available in multiple colors (currently confirmed so far are red (Faye), white (Takara), and maroon (Zoey, who triggered the other two's conversion when her pair took on the form from their intermediate beginner ballet wedge ankle boot form)
 * Rosa R5: wine red with amethyst studs and cyan accents, named in tribute to Anise's Rune Angel designation number (hence the wine red base color; the amethyst studs are a reference to Rainbow Angel second-in-command Anise's Amethyst Angel nickname while the cyan accents are a tribute to Jet being the Rainbow Angel leader).  Described as a Limited Edition model by DX-V2 Marty Jordan.
 * Rosa R6: pearl pink with butterfly designs; name, base color, and butterfly designs all in tribute to Natsume Izayoi (the butterfly designs being due to her Zephyrus Rampage Hyper Weapon).  Most likely Limited Edition.

Trivia

 * The Rosa EX series of thigh-high ballet boots are all zip-up only (for bondage purposes via the double-locking aspect) despite the series' namesake Rosa Copeland personally preferring lace-up-only pairs.
 * The combination of being zip-up-only and the bondage element of two locking straps going over said zipper made the series eligible for being the lone heels for other Rainbow Angel Series.
 * Once Series 500 was discovered when, in 2304, Zoey hitting her Rainbow Angel form caused Rosa EX wearers Faye and Takara to convert over (Takara changing numbers in the process), two Series 2246 variants were revealed following the Genisys War (both mandating the same pair of thigh-high ballet boots - using the same permanent sealing effect the Prime Series Rainbow Angel in said ballet boots made her own irremovable - worn in a porn video from whence came the base Series number (said Rainbow Angel being a variant of the girl in question), with both further requiring the associated collar and the X version further mandating permanently-exposed private areas though allowing arm- and headwear, albeit with the former possibly enlarging one's breasts to enforce the permanent nudity depending on the selected form).
 * Zoey triggering Faye and Takara to shift Series opened the ZVE girl's former spot for Lily Cielena Stewart on a very delayed trigger.