no, something is very suspicious where there are 4 accounts all created on the same day and post a review one after another. see my other reply for more details

There is definitely something suspicious going on with the reviews. Looked into the 5 star reviews and there are clusters of similar accounts (both levels, creation date, and amount of other reviews in moments). For instance, there are quite a few accounts created on the same day with only 1 review in moments. All accounts below are at level 2 which is also very suspicious with only this book in their moments with most only having 1 review and 0-2 comments. I am not saying that the author is definitely posting spam reviews but someone might be. Even most recently 2 accounts (Suga_senpai & Sir_Billius) both posted 20 hours ago and were both created on the same day. Below are two large clusters (4 accounts each) of accounts that were created on the same date have are all level 2 accounts which does not seem random on a book with only 29 reviews. I even attached a screenshot of one of the clusters posting a review one after another. I mean, what are the odds of it being random? You can check them out for yourself. account creation date: 2020-02-21 - accounts: Meliodas_Pl, Daoist627520, Gn_Jk - accounts: Daoist372697 was created one day later 2020-02-22 but i'll also add it the the cluster - all posted review 1 month ago ALL ONE AFTER ANOTHER (see image) - Gn_Jk, Daoist372697, Meliodas_Pl, Daoist627520 all only have reviews/comments about this book in their moment. All besides Gn_Jk (who has 0 comments in their moment), have comments on only this book in their moments with only 1-2 comments each. - all their accounts at level 2 account creation date: 2020-06-23 - accounts: Nobodyhere, lolbyeeee, Suga_senpai, Sir_Billius - Suga_senpai & Sir_Billius both posted 20 hours ago - Suga_senpai & Sir_Billius both only have 1 review each in their moments which is only this book with no comments. - Nobodyhere & lolbyeeee both posted 1 month ago - Nobodyhere & lolbyeeee both both their moments clean - all their accounts at level 2

or that they were already robbed