Poor Luna and Shadow.

I guess it's because Godannar is a modern super robot show that no one in it can just have a happy relationship.

No, it should that pinning away for perverted couplings is not healthy and inherently self-destructive. And that healthy, normal relationships should be destroyed out of fairness.

Otherwise, I hated almost everyone in the series because of that.

It's like neither of them saw the last episode.