Got back to read it all.
Spoiler warning:
The saintess arc had good potential but was not done well. It's absurd that 1 single saintess (the bard) had enough magic power to rewind time for the entire world 20-30 times. Even if it was just a day.
The second nonsensical point is the Claris, throughout these 20-30 times she didn't care about anyone else in the entire school, not the bard who was her longtime friend, or Tanya her best friend now or even Janica who was right next to Ed, it was literally effortless to take Janica with them.
Not to mention didn't try to even issue a warning to evacuate people.
All the guards she had, sacrificed themselves for her, but she didn't spare single thought to them.
Divine power for sacrifice clashed with her divine protection, how did aspectual magic come out from that?

Read around 25 chapters, got tired of the harem. Why not just stick to Janica? There's no real reason for the girls to fawn over.
I'll be back when I get more desperate.
Feel free to let me know if the story gets better. I was kind of enjoying the MC getting stronger. The fight with the kids was pretty decent.