A story about two people who may hate each other but end up dying for each other.
The game, Two Clusters: Kain, has it story deviated from this arc. The game covers about 1/3 of the overall story.
Kain is a poor freelancer who had been an editor at a magazine company on Luna. Being faced with economical crisis, he ends up enlisting for Jovian navy just to feed himself. It turns out, though, that he has talents for being a leader.