User blog comment:B214/Volume 22 spoilers/@comment-82.50.121.73-20161206231912/@comment-29963364-20161207135800

I'm not sure. It might be possible. I would honestly love to see something like it.

Since the Boosted Gear is different from the Canis Lycaon, in that the former has a creature sealed inside it while the latter is just an Independent Avatar type (doesn't have a creature sealed inside it), what you suggest might need to be a joint effort between both Issei and Ddraig.

Issei of course will need to train his body to the point he can fully control his Dragonification, perhaps even aquire Touki, like Sairaorg did. And Ddraig might need to "synchronize" his aura with Issei's to an even deeper level in order for the fusion/merge to happen.