Project A-Ko 4: Final

In "Project A-ko 4: Final", A-ko and B-ko engage in their signature bickering as C-ko watches from the sidelines, feeling neglected by both. Meanwhile, an archaeologist discovers a hexagram-shaped artifact that matches Miss Ayumi's pendant, hinting at an alien threat. The Alpha Cygnans arrive on Earth with a fleet of ships, leading to chaos and destruction in Graviton City.