User blog comment:Ixarising/Crazy/Insane Power-ups/@comment-26322543-20150516115140/@comment-1359322-20150516140912

Vritra Promotion is a fusion form of Saji's 4 SG. Saji can opt to use his SG individually like in Volume 14, or he can use all 4 at the same time resulting in the Vritra Promotion. The reason why his BB uses the Vritra Promotion in its name is because that. That BB is the BB of the Vritra Promotion not Absorption Line or the other 3.