If you like to read the manga/light novel and watch anime. DO NOT READ before watching the anime. otherwise you most likely will hate the adaption. just a fair warning. That being said, the novel is a masterpiece and is by far my current favorite light novel. The author adds so much detail, each volume could easily be its own season and that's with cutting detail out. which is why I suggest watching the anime first, because they cut out so much detail that, if you read then watch, you will hate the adaption. 4 volumes in 1 season. its sickening at how much detail wasgutted.

however, i must also make clear, it is defiantly a little pervy, i mean it is a harem Isekai, so if you don't like the genre don't read it.

also another warning is if you are buying the light novel/manga know the author is writing another series that is the prequel and it shares the exact same title except for the word ZERO. so don't get the wrong book by accident. (guilty of doing this myself)