Disclaimer: I didn't played the VN so i'll review this, as i did with the first season, as an anime-only viewer.
The story adapts the Moon and Terra routes from the VN and because of that this season is clearly split in two parts: Moon route (3 episodes) and Terra route (8 episodes)
The Moon route is rather confusing at first showing as memories a lot of scenes from previous rutes that i didn't know because the first season adaptation was total bullshit. Because of that, i didn't care about the main heroines and anything related to them because they are barely developed in the first season, but still act as we know things about them. Fortunately, the entire show focus around the relationship of Kotarou and Kagari which were the only characters worth something in S1, both in Moon and Terra routes, despite being very different each other, while still related.
Moon was very short and its last episode felt again extremely rushed again forbiding the arc to have a pleasant ending after the first 2 good episodes. However, in Terra finally Rewrite fixes its incredible problem with the pacing. The pacing is smooth and enjoyable, being the entire arc pretty solid with an interesting development by Kotarou, who was a pretty lame and childish character in S1. Plus, the fact the main heroines not being present in the plot avoids major plot holes to the arc, that has a just fine ending which is appreciated in a series with such a complex thematic like Rewrite.
However, Terra is not flawless. Some secondary characters felt like they have a major character arc but they left it absolutely incomplete. Also, some pacing problems to explain some things are present too. These flaws are present during all the series but they are not as blatant as in S1, thankfully.
The character focus in this S2 is Kotarou in almost its entirety. He was a pretty beta VN main character in S1 but the pathos presented in the Terra arc made him an at least bidimensional character who makes appropiate decisions (and i'm not talking about his power). His behavior is believable too, being a grown and mature character which is rare in an anime of this kind and even in anime nowadays. Not perfect, but hey.
The animation is average to good. The CGI is very bad and action scenes can feel anti-climatic because of that but 2D animations is just fine, like first season, maybe a bit better. The sound is good, with the soundtrack and seiyuu's perfomance being quite nice. Nothing wrong with that.
Overall, Rewrite 2nd Season learnt from its predecessor. Maybe it's because they are straightforward routes, maybe because they are just better routes, or maybe they are just better adapted. No incredibly well adapted, but the pacing is WAY better. And this alone can make this show potable by its own.
