Kotono works as a nurse, and seems to have accumulated stress from her job, yet she strangely admits to liking the sight of men in distress. It is precisely for this reason she applied, describing herself as someone who enjoys tormenting men. Outwardly, she appears ordinary, even somewhat shy and plain-looking. However, she rarely reveals her true self to her boyfriend, fearing he might be turned off. During sex, she undergoes a dramatic transformation, turning into a mischievous little devil who captivates everyone who sees her. With a wicked smile, she takes clear pleasure in tormenting her partner, appearing like a completely different person. This striking contrast between her personas is her greatest charm and what makes her so irresistibly alluring.