The reader dies, but some woman appears and tells him shes sending him to Fiore with whatever tool or power he wants. After some thought, he chooses a form of Twice Critical that can change shape to different state, 'SHIFT', as the gear would pronounce. Example, turns to a bunker, shield, sword(a blade arm), or even Wings(they are attached to his body still). Plus can Boost multiple times, but instead of boost, its 'DOUBLE'. Twice Critical equivalent to Explosion is 'BURST',  which releases built up power in different ways based on the state of the gear, like a sword would unleash a powerful slash. Can transfer, 'SHARE'.