KAMI : This is the site of the so-called mainline, of Katsuyuki Kondo Sensei. There are also other "authentic" DRAJJ, such as the Kodokai, the Takumakai and the Roppokai and also organizations that deny the authority of Kondo Sensei and the main line, such as the Seishinkai.
You may look also to those "official" websites :
DAITO RYU AIKIJUJUTSU ROPPOKAI(Seigo Okamoto Sensei)
DAITO RYU AIKIJUJUTSU TAKUMAKAI (founder Takuma Hisa Sensei)