Cimar was to Ibanez as Squier is to Fender. Also, I'm pretty sure they never "officially" sold Cimars in the USA, but who really knows?
From WIkipedia:
"Cimar was a Hoshino Gakki guitar brand. Designs of Cimar guitars are sometimes very similar to Hoshino Gakki's Ibanez guitar brand. Cimar guitars appear in Hoshino Gakki catalogues."
So basically they're the same, just more likely to use their "B-team" parts suppliers. THis looks like a really nice bass, no matter what the headstock says.