Apidya has a japanese sounding title, written in japanese on the title screen, and was developed by japanese sounding developer Kaiko. The only thing betraying this as a german game, is the music that obviously was composed by Chris Huelsbeck. But if you didn't know that guy's style as well as I do, you would think that Apidya was a conversion of a japanese-only insect themed Gradius clone. And a successful one at that.
Title screen nailing that japanese arcade game aesthetic