This is one of the first anime I watched, then I went for the manga. I stopped reading it when I got to the par of the broadcast chapters. At that time I wanted the second season of the anime to come out.
Rin and Yukio are amazing, but both have atypical personalities. Both ironically are corrupted, the power to exorcise is unique. The universe is well created, the final part of the first season of the anime is dramatic? You don't believe it.
I agree with you about the fact that they kept the scenes and plot very well. It was not boring.
That filler arc in the end was really dramatic, I thought I just forgot that part because it's been years since I read its manga, but turns out it's an arc just to make the season end dramatically... and yes, those were really odd like at first, I thought Yukio's the normal one (the bland one lol), but yeah—it turns out he also has odd tendencies which added charm to his character. The adaptation of its first season is far from boring, and I hope it will remain like that in its later sequels.
Btw, thanks for stopping by and looking forward to seeing you around!