Monster no Goshujin-sama

Everyone in a high school is suddenly transported to another world. As they are attacked by monsters they find that some of the students now have superpowers. They organize themselves into two groups. Those without powers are called the Stay Home Group and those with them are called the Exploration Group. On a day where most of the Exploration Group is out, the remaining ones that stay behind start the slaughtering and raping of the Stay Home Group.