Xiao.

Aether was at the inn, sleeping in the same bed as Paimon. Paimon was 80 centimeters tall and always flying, but being the stubborn one she is—or so Aether calls her—she insisted on sleeping in the bed, taking up half the space. Xiao, bored, left his room. Paimon left the door open, and as Xiao passed by, he saw Aether asleep with Paimon beside him. Poor Aether was about to fall out of bed. His long, golden, and shiny hair was loose, not tied up in a braid as usual. This time it was on the pillow and in Aether's face.

Xiao enters and hesitates about helping Aether so he doesn't fall; he didn't want to make him uncomfortable.