Rei Igarashi is the flirty Ultimate Mixologist. Rei likes to search for the most level-headed and coolest person in the room, and make them fall madly in love with her. She loves to flirt, but if another man initiates the flirting, she won't even give them the time of day. She likes to be in charge, but she also loves to play the damsel in distress, just to attract the attention of whoever she has her eye on. Surprisingly, Rei swings both ways, but she doesn't act nearly the same way with women. Rei does have the ability to turn the charm off sometimes, and can be strangely helpful.

As the Ultimate Mixologist, Rei works at the same place that she lives: A bar. The bartender let her and her mother stay there, after they wound up homeless when Rei was young. She began helping out around the bar, and the bartender picked her up as an apprentice. Rei's official title is the Ultimate Mixologist because it wouldn't quite be legal for her to be a bartender. She's well known for making delicious alcoholic beverages despite never having tasted a drop of alcohol; in fact, she hates it and the effect it has on people.

Rei has a medium to medium-low voice. Her voice is usually sultry and seductive, trying to lure men in. She speaks a little more slowly as a result, lingering on certain words. When excited though, she quickens her speech, and drops the seductive voice. If I had to compare her voice to a canon Danganronpa character, it would be closest to a more seductive Kirumi Tojo, but I'd recommend not getting too hooked up on that.