Can someone explain to me in what order is this supposed to be read?

I think the normal order is ok, is there anything you are confused about?

read the explanation at the beginning of ch,6, the manga has been changed by the author so the version 4,1 etc is correct and chapters 5, 6 are the continuation of 4.1

oh i see, thank you both. i got a little confused because people were saying there were two versions