What does it symbolize?

Yuhi sighed. If only there was a way to get closer to her right now. But the only 'method' he had in mind was 'that.' He cursed in his mind; it is no wonder there are so many bad rumors about him. 

"Now then. What's with the dress?"

"Um, the other day, you seemed troubled by my clothes. It's not exactly safe for me to be going out right now. So I decided I would just make my own clothes."

So, she noticed he was behaving strangely. If that is the case, then why is she wearing something even more revealing than before? His thoughts broke off, hearing jeering sounds, and he noticed a group of guys staring at Sumire and wolf-whistling.

Frowning, he draped his jacket around her shoulders. 

"Seriously, if I didn't promise Hino already. I would have gouged out the eyes of anybody who looks at you strangely." Yuhi raised his voice slightly.