♂(おす)マスク先輩

A trio of male students who are Minato and Ouga’s upperclassman. They were ordered to wear masks bearing the “♂” mark as punishment for sexual harassment. No. 1, the red upperclassman, likes being body-shamed; No. 2, the blue upperclassman, likes being abused; and No. 3, the yellow upperclassman, has 26 odd fetishes.