Alternate ending
Project A-ko 4: FINAL: In the original ending, A-ko and B-ko are finally became best friends forever. After A-ko wearing her sailor-suited battle uniform, B-ko carries A-ko using her flying battlesuit, blasts off and flies up into the night sky. Two of them flies up into the earth's upper atmosphere, higher, and higher, and into the outer space. Now, A-ko and B-ko are eventually stay in space as two of them became the intergalactic defenders of the galaxy.