Cereza - Surprised in Bondage

There is not going to be a new comic page this week, because of reasons. 
But I won't leave you hanging without your dose of Cherries. So here is a picture I did the day after my first Commission Stream run to celebrate the occasion. 
Cereza was doing some self bondage when someone interrupted her, who could it be that surprised her like this? I don't know, create your own stories and share them with me