i wrote a review already, but let me add something.
Parody, Eroge (based on other's work), etc. those exist because of many reason but one of them is definitely because people wanted to see a different situation happen to the characters of other's work, and this novel is one those types of novel.
The focus of this one is just like the title stated, it's about girls from other's manga, novel, or anime. so, don't expect epic story, amazing comedy, good interaction, good battle logic/reasoning, and many others.
my point is, just enjoy the girls' behaviour, ecchi happening, crossover to other novel's world, and the battle maybe. and you can enjoy this.
