What is the bondage-like rope Yui Yuigahama from Oregairu is wearing? I just started watching Yahari Ore no Seishun Love Comedy wa Machigatteiru, and the black rope-like object I see on Yui looks like bondage ropes. I doubt it really is, so what is it?



Just watch the first episode of first season and pay attention to Yui.
I haven't been able to find an official screenshot showing this, but fan art of Yui seems to be consistent in showing the cords being part of an undershirt with a saw-cut edge: