Shiritsu Araiso Koutougakkou Seitokai Shikkoubu

Kubota Makoto and Tokitoh Minoru (characters from Kazuya Minekura's manga Wild Adaptor -- though no reference is made to the darker storyline of WA in this light-hearted anime) are the muscle of their high school's all-powerful student council. They defend the student body from disorder -- generated by both humans and demons -- while avoiding their classes.
(Source: Anime News Network)