My review... Epic yuri slut-fest. Yuri-ism is a transmissible virus in this story, with Manami being patient zero. One minute you're a sweet innocent schoolgirl, the next minute you're scissoring your own mother and douching your ass to accommodate five other lovers! Some mention NTR... It isn't, there is just no monogamy here. Everyone is bedding everyone they come in contact with. I suspect this to be a male fantasy work, rather than a sympathetic exploration of yuri relationships. However, I am not complaining.
Check out this chart on the last page of Chapter 28, which shows the slutty carnage of this series up to that point. I give this seminal work 20/10
