I joined around episode 7 of season 2. It’s not a great way to follow an anime but a friend gave me a quick summary of what happened before.
What I saw was only Slaine being in love with the princess, going batshit insane when he finds out she loves somebody else who doesn’t deserve it just BECAUSE. A jealous sister who loves Slaine but he doesn’t care about her…the ending was predictable. Two planets in war, love and peace is important…
It looked pretty with certain scenes but it didn’t feel like it did anything exceptionally well. The robot battles were just there, there wasn’t much action with the battles, lots of talking when in cockpit view.
Certain side characters were more interesting than the main characters, but they weren’t fleshed out.