First, don't run this in Anex86, as it immediately closes (probably issues with the sound driver) T98-Next or the equivalent will work fine. It's a nice (if rather hard) kind of shoot-'em-up starring an angel against the demonic hordes. Arrow keys control movement, while X shoots and Z selects your power-up (Gradius-style.) The game is pretty hard... there's a lot of shot spam, and many of the enemy projectiles are destroyable, which is nice, but if you die, your base weapon may be insufficient to get through their shots to injure them, and they remain on the screen in many cases.
Unfortunately, there's no developer ID on the main screen, and no on-disk documentation.