ミユ・オッタフィア(通常) ミユ・オッタフィア(部屋着)
The default costume of Nijisanji ID's Miyu Ottavia, as seen in post #3847685.
It's based on an otter costume with an otter hood top and a false otter tail, and black boots.
This tag implicates miyu_ottavia (learn more).
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