Seira is the main character from a dating simulator called hating simulator and is the genderswapped version of senpai. Seira has strawberry blond hair tied into a side pony tail with a red ribbon, she has a constant blush, with light skin, her left eye is green and her right eye is blue, she wears a dark blue uniform with a red bow and a blue skirt, she carries a brown backpack on her right shoulder and holds a microphone for singing in her left hand, and she wears black shoes with white socks. Seira is normally a very polite and calm individual who typically speaks in a formal way, especially towards people she likes. However, she has a short temper and is a sore loser, becoming rude and speaking more vulgarly after losing. This sudden behavior change is explained as a result of Seira's programming being unable to handle a loss since she was only ever meant to be perfect. Seira has been described as a "generic pretty girl asshole" and is somewhat based on how people who are self-centered or toxic can be in real life. She may also be insecure, as she would be the kind of person who strips when no one asks her to, and when she isn't told that she looks awesome, she starts crying. She is also the type of person to have all sorts of prejudices, including being racist and anti-gay, and she would call people slurs, even though she would have pronouns in her bio. followed by multiple male admirers. Having lost twice, Seira is seen writhing before something violently bursts out of her face and destroys her. Spirit, the one trapped in the game, finally emerges in Seira's place, causing the once bright location of the school grounds to become desolate, deserted and dark.