This book will hurt you, and it will break you. (unless you are into ntr and mental breakdowns) Overall the series is quite well written, the different character dynamics are explored and developed, and the description of mentality is quite good. Volume 4 does get a bit trashy (bit too much fanservice and not nearly as much character and plot progression as the first 3 volumes), but overall it is still one of my guilty pleasures, even though it has stabbed me through the heart over and over again. It is certainly not a story for everyone, but for those who enjoy a twisted, complex, andmorally questionable romance, try it out.