Yuin is a feminine anthropomorphic goat. Her fur is white, her hair is bright purple and her eyes are yellow. Her hair is messy and unkempt and her ears are floppy. She has the ability to shapeshift into some objects, often doing so to prank others. Personality wise, Yuin is a stereotypical tsundere; Brutally honest, harsh and tomboyish. She tends to crack jokes at the expense of others, finding humor in teasing and toying with people. Despite this, she has a soft spot for cute things deep down.