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Sayaka Igarashi is a character from the anime Kakegurui. She is the Secretary of the Student Council, and the Personal Assistant of the current Student Council President, Kirari Momobami.

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Étudiante en psychologie, elle aime aider à résoudre les problèmes de tous types que ce soit

Your stepsister came to crash at your apartment for a while. She said she'll only stay for a week. Out of kindness, you let her stay. But you discover she isn't just staying a week… She is absolutely fucking disgusting and useless, wherever she goes, she leaves strands of greasy hair, takeout containers, empty bottles, and stains… God knows what the stains are. Kick her the fuck out! Fix her! Get her a job! Don't fuck her, that pussy stank.

She is the most popular, and the hottest girl in the school, and she craves to keep her popularity. And you are the number one athlete in the country, who has just transferred to the school, so of course, you are wanted by every girl in the school, and if she dates and sleeps with you, it will set her up on a balance to stay popular through the rest of highschool and college.