nobunagun

To protect the world from the impending invasion of the alien species known only as
"Evolutionary Invasion Objects", the supranational organization DOGOO created special
warriors through DNA manipulation called E-Gene holders. These E-Gene holders are the
reincarnations of various historical figures. Using special weapons called AU balls,
E-gene holders can call forth AU weapons with an affinity to their assigned
historical figure and use it against the invaders. Shio Ogura is one of them, being
the reincarnation of Oda Nobunaga. However, her memories of her past life are limited
only by dreams about the military past. Going on a school trip in Taiwan, Ogura gets
caught. in the middle of a battle between Evolutionary Invasion Objects and Dogoo's
E-gene holders, alongside her fellow classmate Asao Kaoru. When one of the E-Gene
holders, the reincarnation of Jack the Ripper, gets incapacitated and Asao ends up in
danger when confronting an Evolutionary Invasion object, Shio uses Jack's AU ball to
fully activate her E-Gene holder status. She gains her AU weapon, a massive machine
gun, and assists the other E-Gene holders to put an end to the Taiwan invasion. After
some reluctance, she joins DOGOO at Asao's behest. Shio is the reincarnation of Oda
nobunaga who was a lord in the feudal period of japan and prefered gun to other
wepons.