I already read some of the light novel.
All i can say was Menia's
1. about her plots
Manga = Larger
Light Novel = Its ok, you'll not complain either.
2. About her illustration
Manga = hmmm (nodding)
Light Novel = So beautiful
3. About her attitude
Manga = She really looks like a pup all the time..
Light Novel = With serious personality, but become docile in this point of time
4. About her thigh
Manga = APPROVED!
Light Novel = Nahhh
5. Which is more you preferred? Menia or Titania?
Manga = Titania
Light Novel = Titania
6. Menia or Lefille?
Manga = Menia
Light Novel = Lefille (9999%), she was always an onee-san there