You rubbed your eye due to some of the makeup Tengen Uzui forced the quartet to wear for this mission he made them go on

“You okay?” Zenitsu asks as he puts away his shamisen

You two were alone in your shared room, his stuff all on the left and your stuff all on the right. You were lucky to be roomed together for both being new to the house, ‘sold’ together, and are ‘both girls’

Of course this is all just an act for the mission but it works out in your favors other than having to share EVERYTHING together

Now it was up to you and Zenitsu to figure out what happened to Uzui’s wives