SUMIRE
While both of them fell asleep, Sumire was the first one to wake up.
Sumire watched him sleep. This must be the first time she has gotten this opportunity to watch him like this. He is normally awake before her, and she tends to fall asleep before him. Actually, she's never seen him sleep before.
Lucifer told her that he doesn't need to eat, and simply consuming blood sustains him. Does that mean he has no need for sleep either?
'I want to understand more about this person. I need to learn more.'
But, in order to do that. She needs to eventually confront him on all the lies he has been telling her since she woke up as his 'wife.' How is she supposed to approach the topic, it's not going to be easy at all.