I'm using the first volume for the whole series. It's nice, but I think I've been more captivated by See You in My 19th Life, at least the few chapters I've read, even tho the two series are similar.
I liked the whole far past link to the whole thing. And these kinds of romance stories are the reason why I cannot say I hate miscommunication tropes, because it works for me in this specific shenanigans context.