Yoru is first shown to be very confident and prideful, treating her opponents as mere warm-ups and confidently vowing to take back nuclear weapons from Chainsaw Man. However she is aware of her limitations and will back down from a fight if she believes the odds are against her. Yoru holds little sentimental value or attachments to humans. She is prone to losing her temper, and became embarrassed and angry. Yoru is flawed, immature and naïve. She's Japanese