The comments next to ☆ ratings found under Circle Management > [New Reviews and Ratings] > Ratings are not reviews.
These [Rating and Comment] are written via My Page > Purchase History > Rate (for the relevant product),
and while the ☆ rating is counted, these comments are meant to be readable for the circle only.
You can also view these comments via the link under Circle Management > (relevant product) > Ratings [Rating and Comment].
You can use the Hide button to hide comments from view on the Circle Management page.
* This action does not remove the ☆ rating.