Seraphina (nicknamed Sera) is a third-year student of Wellston High. She is the deuteragonist and one of the main protagonists in unORDINARY. She is the first ranked student in Wellston and held the prestigious titles of Queen of Wellston, and later Ace of Wellston

She is moderately tall. Prior to John's arrival, Seraphina lacked the greenish-yellow streaks in her magenta hair and overall had a respectable appearance. She would wear her long, hip-length hair in a ponytail, and had her attire in order, wearing her jacket properly, doing her tie accordingly, and had her shirt buttoned all the way to the top button. Her uniform had no to few wrinkles in the past

At some point after meeting John, Seraphina cut her hair short, added light green highlights to it, and started using hair extensions regularly. Her outfit is notably more disheveled than before, most of her clothing full of wrinkles as she does not care about how she is perceived anymore.