I really like the concept of a infinity of apocalyptic worlds where you're randomly send to.Main character is cool. Firstly because, she's a girl and she is strong but there is not a trace of Super Male Lead that will be even stronger than her so that he can come and save the damsel in distress when needed. She doesn't have OP super powers... well yes, I admit her powers are cool and have the potential to become OP and are certainly better than a lot of other people in the novel, but ! Not OP yet and there are already a lot of people with seriously stronger powers. So she's in the low-average norm. (And thankfully no medical super-power yet. I'm beginning to overdose on those).The side characters are interesting. Not necessarily the best I've seen, but there are well thought out. They have varying personalities and are not boring.And the concept allows for almost endless stories ! The author could write 2000 chapters and I'm sure it would still be fresh and interesting. There's just so many possibilities !