Being honest, I didn't like the first three episode of Moon Terra Hen. I know the first three epsisodes of any anime series is key for any watcher it helps them decided i they are going to keep watching or drop that anime. I didn't like moon terra hens first three episodes BUT, I did keep watching because i watch the first season of rewrite and while Moon Terra Hen was way better than the first season, the first three episode are meh.
After the first three episode Moon Terra Hen mostly focuses on Kotarou and the correct timeline on how he actually met Kagari and all the events leading up to how the world was destroyed the first time. In season two we see Kotarou relationship with his parents , Guardian, Him going to war, Kotarou becoming a traitor in order to help Kagari spare the planet by joining Gaia while being apart of Guardian and Him killing ALOT. Honestly season 2 is more bloody than season one so there that
Season two ended with a happy ending which is a surprised seeing how the majority of KEY'S work will leave you a balling mess of tears or in the case of Charlotte rage quit. It manage to wrap up everything nice even though there was a few minor plot wholes left unanswered Season two had a good ending that wasn't sad or infuriating. The only thing i did have a problem with was during season two there would be moment where Kotarou would have these popup VN choices and i found it pointless cuz it not like we were playing the VN. I get it. It was probably made to see what choice Kotarou was going to make but it was stupid because he was always going to make the right choice.