The description found on
http://nako1941.blog87.fc2.com/blog-entry-103.html
says (roughly):
"A lady and a butler, a maid, female high-schoolers, forming a band,
friends and criminals, mecha monsters, goth-loli and powered suits,
and a near-future Tokyo. A powered-up renewal, set in the world of
the masterpiece anime Bubblegum Crisis. Just wait a little while
until the premiere of this all-new original story full of future hard
action!"
From pretty much everywhere the book is available:
"2030's -- the mysterious evolved megalocity Tokyo. Priss Asagiri, a
budding high-school rock artist, happens upon a runaway Boomer
lifeform by chance, is scouted by millionaire daughter Sylia
Sakakibara, who wishes her to fight alongside her. On the condition
that she assist with her band debut, Nene Rokuhara and high-school
maid Linna Yamazaki, who attend the same school, they start battle on
the other side of school life as the superior powered fighters, the
Knight Sabers. A newly written work based on the masterpiece anime
series, raising the curtain on the raging billows."
Amanda