Going to have to disagree with you there...
I've read all of ReLIFE that is currently out (Mainly because it's on Comico and I really like their app. There aren't a lot of places you can access Japanese manga overseas with so little hassle.) and I would rate it OK at best. It's occasionally interesting but I just can't get over how poorly thought out the whole main plotline is. There are plotholes big enough to drive an aircraft carrier through, and that ruins the whole suspension of disbelief for me...
#1 Yeah, the premise of the story is completely unbelievable in many ways. You just have to roll with it without thinking too much about it.
Still, the character interactions are entertaining (and Hishiro is HHNNNGGG lvl moe). As far as slice of life goes, this is a good one.
Also, I really like the art style and character designs. Hoping they keep everything the same there for the anime.
#2 That you complain about my suggestion of ReLIFE instead of Fate/kaleid liner PRISMA☆ILLYA 3rei!! is a small victory to me