User blog comment:B214/Volume 23 discussion blog/@comment-76.175.162.45-20170327232716/@comment-10330822-20170329191307

It may not be a Sacred Gear, but it gives Issei access to pretty much the same abilities. He can use both Divide and Reflect. It makes me wonder if he can "unlock" use of Half Dimension later on. If that was the case, it doesn't really matter if its not a Sacred Gear, he's using the same abilities.