Entirely unrelated, but did that spin-off of the OOO movie with Hina getting a belt ever come out?

Yeah it came out. I know that confused people a bit because it was a Birth related special to promote the new form, but people thought it already came out since there was a Birth Prologue Net Movie released before the 10th Anniversary movie.

But yeah no it did come out. Odd little special, but a fun one that let's Birth X actually do something.