The 9th costume of Nijisanji's Sister Claire, as seen in the official reveal tweet and post #5621541.
It's a punk/night club DJ-themed attire consisting of a black baseball cap, a black mouth mask, a black jacket, a black cropped short-sleeved t-shirt, a chest harness, a black leather belt, a black suspender half-skirt worn over a torn pinstripe miniskirt, an o-ring thigh strap, black socks and black shoes.
The following tags are aliased to this tag: sister_cleaire_(9th_costume) (learn more).
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