The star's appearance gives him pause - but one glance to Ameterasu gives him all the confirmation he needs that, no, it's not some trick, but an opening she's given him!

There's no time to waste, and he won't ruin the opportunity she gave him. The extra weight brought the whole beast low enough that, with some angling, and avoiding the swing of one if its heavy arms---

Bullseye. His sword plunges through the other arm, and pins it back at an angle that leaves its chest arched back, open and exposed.

Everything feels as though it's racing, but he looks to her, and meets her sharp eyes, giving a short confident nod. It's now or never!