[Maybe he had been judging, but it doesn't matter. He doesn't care enough to talk Nagasone out of it, and why would he? Once the man produces the knife, its sharpened edge gleaming in the light, Light eyes it dubiously. So, a murder had taken place even before all of this. He shouldn't be surprised, and if the man is resigned to his fate, then so be it.

But if it's any sign of shock or surprise that Yukina may expect at this revelation, it doesn't come. Only a faint agitation twitching at his brow and nothing more.]

Looks like blood's already been spilled. If you want to die, Nagasone, we can at least make your death work to our advantage.

[Yes, our. Glancing back at Yukina again.] You're going about this without thinking, Yukina-chan. Look how quickly you jump to conclusions, without even consulting me about this first. What makes you think I wouldn't want to help you achieve this goal?

[This is the confirmation he wanted, he needed. More than just the numbers and the math, but the ability to hinge on a moral obligation, telling the world, "This is why I killed, to save you all." It's fitting for Kira, and it slots nicely into his desire to just end this game as quickly as possible.

Yukina has brought him a boon, despite her intent of killing him. She only needs to accept his offer.]

Let me assist you. You'll need all the help you can get... until the end. We're allies for a reason.