D3Pubisher is known for Earth Defense Force and licensed kids games like Ben 10 in the West. In Japan, D3Pubisher makes quirky games like a PS2 game that’s clearly inspired by Attack of the 50 Foot Woman and the hostess dating game Dream C Club.
So, they put they made a crossover promotion in Japan that probably makes no sense here. If you purchase Earth Defense Force 2025 directly from D3Publisher you’ll get balloon decoys featuring Dream C Club characters Mina (the blonde girl) and Setsu (the girl with the right hand pony tail). Rangers can use Mina and the new Air Raider class can use Setsu.
This collaboration has only been announced for Japan. D3Publisher announced they will release Earth Defense Force 2025 in the West, but we haven’t hear many details about it.