Mai Maimaki

Mai is the vice president of the athletics club. She admires Tsukushi and wants to be her successor, therefore making her hostile toward Youto, who is another candidate for the next club president. Despite this, she also has a kind side, as she reluctantly agrees to go on a date with Youto when being demanded to do so by Tsukushi. It is hinted that she is more perverted than Youto.

(Source: Wikipedia)