[Echizen777]

Originally Posted by Ophis

Tatsuya's intention was to just make thin holes on her, not decompose her whole body. Lina didn't use Parade against Miyuki because that would be useless. Miyuki's specialized in wide area magic, Parade only prevents Lina's Eidos to be direct targeted by magics like 'Mist Dispersal' and 'Rupture'.

He didn't want to kill her so he aimed for specific points to knock her out. 4 shots managed to do thin holes, meaning that 2 were nullified and 4 made only thin holes instead of a big one like contrarily to Blanche's minions. Lina's barrier us THAT strong. Parade would have been useful because it is an enhnced DF and DF is the classic CM to prevent event modification/magic. Even Shizuku's DF could nuliffy some of Miyuki's attacks. And according to V9 there areonly 2 ways to break it. It would have been extremely useful.

Originally Posted by kazakiri

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.

Yeah, so it was useless and given the speed of her attacks he would have never been able to nuliffy any
beam with Gram Demolition, without taking in account how hard it would be to counter Lina's attacks. The parasites were using self acceleration and superpowers in the spoilers.