I think that KD7BWB pretty much summed up my own thoughts about this series. However, there are a few plot hole that I feel the compulsiive need to point out. IF YOU DON'T LIKE SPOILERS, IGNORE THE STUFF BETWEEN THE ********'S!
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#1
The fact that so many of the women are lactating? REALLY?!?! are they ALL pregnant?
#2
During his match with Gladys, Ryuuto notices that his hands are hot. Shamsiel tells him that it is fine because he was 'reborn' and you see a diamond shaped symbol on the back of his hand. "Reborn" as WHAT exactly?
#3
this story supposedly takes place during the middle ages. well then why do they have EXPLOSIVES?
#4
going back to #2, there really is no explanation given as to what exactly makes Ryuuto so special, being at the bottom of his class to becoming ridiculously insightful all of a sudden.
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All in all, I would have to say it is a pretty good story, but it looks a little unfinished with all of the plot holes.