Gunbare! Game Tengoku: The Game Paradise 21998

PlayStation-only sequel to Jaleco’s crossover cute-’em-up.

The system uses a gun controller connected to the 2P controller socket to provide cover fire for the shooter.
The title of the game is therefore a combination of Gun and the Japanese word Ganbare (Don’t give up!).
Even if you don’t have a gun controller, you can use a DualShock controller to shoot for cover.