- 7,069
- 1,457
Natsu's Fist at that time was quite litteraly infused with all of his magic energy, it's not something he'd do unless he has to nor is it the only thing he'd do in the form. Long Story Short, it's not that he can't Maintain the form, it's that he poured everything in one attack.
Also Ichigo has no resistance to his Poison, which will impair his movements and Subsequently kill him if used in a breath attack or will decay his skin on Contact
That said Natsu scales > RoT Acno >> SFD Natsu > FH Zeref > Dragon Acnologia = Holy Pendrakes >= Half Dead Igneel > Human Acno > Draconified Natsu > Animus = 24.3 Petatons
He's pretty far above 24.3 Petatons so it's not enough to One Shot
Also Ichigo has no resistance to his Poison, which will impair his movements and Subsequently kill him if used in a breath attack or will decay his skin on Contact
That said Natsu scales > RoT Acno >> SFD Natsu > FH Zeref > Dragon Acnologia = Holy Pendrakes >= Half Dead Igneel > Human Acno > Draconified Natsu > Animus = 24.3 Petatons
He's pretty far above 24.3 Petatons so it's not enough to One Shot