Seira Rindou

Seira is the student council president of Mei's school. She has a perverted personality and often gets into ecchi situations with other female students and teachers, or Mei, which often involves BDSM. To combat Fūka's constant interruptions, she carries a folding fan and uses it to block Fūka's wooden sword. She is a powerful force in the school, and often gets involved with Mei's life. Seira especially likes to play pranks on Mei such as replacing his panties with white briefs for men. (Wikipedia)