User blog comment:B214/Volume 23 discussion blog/@comment-76.175.162.45-20170327232716/@comment-30924344-20170329175937

Divine Dividing Wyverns is actually an original ability of Divine Dividing. Issei stole it by absorbing one of DD's jewels into his Boosted Gear giving him the Divide ability in Volume 4, but later that transformed into the wyvern ability, but unlike DD's which has the one type, BB has two types: DD's wyvens and BB's own variation that Boost, Penetrate and Transfer.