Senjuushi: Kijuushi-tachi no Happy Birthday!

In a world where valiant rifle-wielding soldiers are literally the embodiment of antique firearms, a new threat emerges, casting a shadow over their hard-won peace. These noble gun-boys, each a living weapon with a unique personality and storied past, must once again stand united to protect their home and their ideals. Get ready for a thrilling adventure as their bonds are tested and their resolve hardened against an unforeseen enemy. This special OVA delivers a high-octane celebration, bringing together fan-favorite characters for an action-packed mission that’s both heartwarming and explosive. As the lines between duty and friendship blur, these anthropomorphic heroes will prove that even in the face of overwhelming odds, their spirit and camaraderie are the truest weapons of all.

✦ AI-drafted summary