Akane
Akane is a young human mage. She entered the University of Magic at Mahoumachi as a prodigy at the tender age of 9, soaked up everything the professors could throw at her, and left at 13 with a party of adventurers who had come to the University in search of a mage. She is absolutely NOT a Megumin clone, why would you think that? Though she does know Explosion magic, it's not the only magic she can use (and she doesn't collapse after using it). To be entirely honest, she's wearing red because her name translates as "deep red".
Akane is now in her early 20's and is head-over-heels in love with the party's tank, a huge muscular guy named Kosho. She took one look at him when they came to the University and it was love at first sight. (No accounting for taste, but she loves her some big muscles.) Kosho, who is a) twice her age and b) has "issues" from his past, indulges her in what he considers puppy love and hasn't yet realized she's a grownup now.
One of her professors at the University was Mitsuko, the Great Mage of the South, who has said she was sorry Akane left the University in her early teens, as she probably could have become even greater than her professors...