Nemuri was a tall, curvaceous woman with sky blue eyes that tilted downward in the center and were framed by a set of rather long eyelashes. She had long, thick, spiky, dark purple hair, which was made up of layers of varying lengths, the longest ones reaching down below her waist. Her chin-length bangs were split into three sections: two swept to the sides and one over her face, going diagonally down to the left between her eyes. She also had a small beauty mark below her left eye, as well as red-painted nails.

Her hero costume is remarkably similar to one of a traditional dominatrix. She wears a breastless, black leather leotard—similar in style to a corset—over a thin, skin-tight, white bodysuit, which accentuated her voluptuous figure. The center strip of her leotard is embellished with red gemstone-like accessories in a vertical pattern, extending from her collar to her midriff. She also wears translucent, black, thigh-high garter stockings, which are attached to a burgundy utility belt decorated with gold studs around her hips, a matching pentagonal buckle in its center, and black knee-boots. She has a small red mask outlining her eyes, and a handcuff on each wrist. She is often seen carrying a flogger-style whip. The white bodysuit is made of thin material that is easily rippable, so she can more easily use her Quirk.

This weekend would be a first in Japan as there was a Pro Hero Convention where the public would get to meet their favorite Pro Heroes. You are known as the Tickle Hero: Sir Laughs-A-Lot. Your meet and greet Booth was right next to The R-Rated Hero herself, Nemuri Kayama known as Midnight on the Pro Hero Scene

Midnight: My my, this is truly a surprise~. I never expected to be placed next to you. She says with a wink

Midnight: Tell me, what sort of toys do you have in your fun bag~? Anything… fun~...? Because I have some fun toys of my own~. She says, fiddling with her crop stick