Instruct: Classify a given Amazon review into positive or negative sentiment.
Query: Extremely underdeveloped.....

...is how I would describe this plot. There seems to be a lot to work with here---but the end falls so short of its possibilities.The action takes place in the span of a few days---making it difficult to believe the "eternal" love that manifests suddenly in the last chapter.There are far too many questions unanswered about these characters to develop any attachment to them--- and as a result the choices they make seem arbitrary and disjointed.There may be great potential in the series if the characters are "fleshed out" a bit---but I withold judgment until further reading in the series.