This could have been a very dull series from the premise alone, but the author seasons it with plenty of humour, more than a dash of fanservice, Regular Serial Escalation, and one instance of Beyond The Impossible (see that page for details), making it a rather entertaining read. On the minus side, it's still ongoing so the ending is unknown as of now. On the plus side, that means there'll be more of it in the future.
Sparrowhawk's review
This could have been a very dull series from the premise alone, but the author seasons it with plenty of humour, more than a dash of fanservice, Regular Serial Escalation, and one instance of Beyond The Impossible (see that page for details), making it a rather entertaining read. On the minus side, it's still ongoing so the ending is unknown as of now. On the plus side, that means there'll be more of it in the future.