
However, Ryo Itoya stole the Ixa Knucle from Nago and used it in an attempt to impress Megumi, only to be tricked by Megumi and the system was returned to Nago soon after. Megumi borrowed the System once to kill the Rook to finally finish what her mother started years ago. Due to Nago's incapacitation, Kengo Eritate was appointed the new primary user for Ixa, although his ability to use the system was quickly cast into doubt after his failure to destroy Kiva. After being defeated by Bishop, Nago relieves Kengo of the Ixa System, becoming its primary user once more. Although the Ixa System prototype was present in 1986, it had only Save Mode as Burst Mode was still in development. As such, technical problems were frequent like the armor shooting out steam, a constant beeping, a different tone of voice for the Ixa Belt, a bronze projection for the Ixa System's transformation and the availability of only one Fuestle: the Knuckle Fuestle. The Ixa prototype exhausts a qualified person's body considerably even if they are not human, as the System still managed to harm Jiro despite being a Wolfen, and it harmed Otoya to the point of total memory loss. Ixa has been continuously updated since 1986 and with the tenth model used until it is upgraded to the eleventh model with a new mode. Both Ver.X and Ver.XI have a golden projection of the Ixa System instead of the original's bronze color. A total of six Fuestles are available to the user as well as a new weapon: Ixa Calibur. Save Mode is the mode used by Ixa mostly in the year 1986 in one of its early prototypes referred as the "Proto Ixa". Burst Mode is the first of Ixa's modes to appear. As the name suggests, Burst Mode creates a burst of heat that damages everything in range when transforming from Save Mode. It uses the Ixa Calibur to perform Ixa Judgement and the Ixa Knuckle to perform Broken Fang. When performing the Ixa Judgement, a vision of the sun appears behind Ixa. Rising Ixa is the upgrade to the Ixa System, known as Intercept X Attacker Ver.XI. As it is the perfected version, Ixa's power is at maximum strength. This mode is accessed through the new Ixariser and the Ixa Knuckle Ver.XI. After inputting the code, Ixa's outer armor is ejected and the head crest changes once again. In this form, Ixa can perform the Final Rising Blast. The Ixa system would receive one final upgrade which allows the user to transform directly into Rising Ixa, using a blue projection system. The rising system was so powerful at first that it knocked Nago out of transformation the first time it was used from the massive recoil but eventually he learned how to overcome it and use it effectively.