[kazakiri]

Originally Posted by Echizen777

Tatsuya was at complete disadvantage against Lina there. Gram Dispersion was useless, her attacks too fast and he needed to stay concentrated so that he could bypass Parade. Even six shots of his Decomposition only made thin holes on her. Makes me wonder why Lina didn't use Parade against Miyuki. She can even maintain it under her ZI...

The reason Tatsuya didn't use gram dispersion on Heavy Metal Burst was to avoid the plasma dispersing

Spoiler for Gram Dispersal and Heavy Metal Burst:

As her first shot had reduced his right arm to cinders, he interrupted Gram Dispersion in order to avoid receiving greater damage; if he destroyed the information that coalesced it into a beam, the plasma would disperse. He had lost from the moment the beam had started coalescing, and if there had been wider dispersion of plasma when she fired then Tatsuya probably wouldn’t have just lost only his right arm; as much as half his body could have been burned away. Of course, even if it was, his body would probably be instantly restored; however, that had become his winning move and without the sleight of hand with his right arm, he wouldn’t have been able to launch a surprise attack.

From the beginning of the bombardment he had to avoid interfering with Lina in order to curb consecutive damage by using the extra time to construct how the ‘path’ was created. Even if he followed the path of the shot by the shockwave it produced, without a doubt he would have been given enough damage to hinder his counterattack.