Fighting for Each Other!

(Rewrite!) Mizuki and Harumi are content and happy on Earth, until two aliens land and turn their world upside down. The worst part is, they fall for the two aliens, and the aliens fall for them. With new threats and the danger of dying everyday, will they get the chance to confess their feelings, or will the worlds fall in despair before they get a chance! PiccoloxOC, OCxOC.