[Netto Azure]

Originally Posted by Awrya

Actually, this was answered ~2 weeks ago in the LN discussion thread by Netto Azure, he summarizes the themes pretty well.
Courtesy of Netto Azure

Although I would add...

Spoiler for Moar Spoilers!:

...That "Familial Relationships" could also apply to Mother's Rosario. The whole Asuna vs. Her Mother debates really hits hard. Floor 22, just becomes even more symbolic. (Which I thought couldn't happen. xD)

Still when you can...try reading Volume 7 Mother’s Rosario.

You will truly understand what it’s like to get emotional over this series. I get teary eyed everytime I watch this MAD lawl. xP