Of all the different animes with the element of time travel that I've seen, this is certainly one of the most unique ones out there. Its mix of drama and suspense gives the show exactly the same vibe as the undisputed king of the genre: "Steins;Gate".
Both the opening and ending are divine and that's absurd because the first season also had perfect op and ed, I'm always impressed with the production team of this anime because they don't miss absolutely anything, it's practically impossible to say that anything something was badly done in the anime and I'm not even exaggerating, I could write thousands of good things about the anime here but I'll leave the rest for you to have the pleasure of discovering and savoring this wonderful work!
