TOH
From those words, they must have been talking about the drug that's been circling. Lucifer must have put him in charge of this case knowing that Sumire was working on this too.
"You're angry at me, even though you're so handsome. You're ruining your face with those lines."
"I can't believe you let your guard down." Toh shakes his head. "No, since it's you. You probably volunteered to drink it."
If she had been working on this case, she would have definitely been more vigilant. For her to still end up in this state, she must have drank the drug voluntarily. But, why would she do that?
"You're raising your voice again. I don't like it when you do that."
"This is still me being calm, now tell me why the fuck did you drink that?"
"It's mine to drink! They made it for me. Those pretty angels." Sumire giggled as she flung her hands in the air. "I don't have wings yet, I guess I need to get some more."