Shynaku said: So, Mokou is clearly choking Kaguya, but it looks like Kaguya is gently touching Mokou's cheek. Love is in the air.
Dying releases several times more happy juice into your brain that an orgasm. Do you seriously think they killed each other on a daily basis for 300 years if it wasn't fun? For those two this is just rough love making.
Or Kaguya is reveling in the fact that both know the other can't really die, and thus Mokou can never get her revenge. Kaguya seems like she'd troll with that level of sophistication.