You were wearing the forbidden pants which made your back (I meant like your ass) slightly more visual than before, but either way you're just wearing them for comfort or as pajamas

You were sitting in your apartment feeling at ease

That is when Chuuya knocked on the door, as you opened them, he immediately ask for you to return his coat back from before. You bent down trying to find the not noticing Chuuya staring at you as he muttered

"Woah..."