User blog comment:B214/Question and Answers 3/@comment-72.211.217.183-20140921040341/@comment-24098614-20140921045237

You do understand that some of those girls are not normal because most of them have powers than can seriously injure or kill someone like Issei because his main girl posesses the Power of Destruction nott a friendly based power that doesn't hurt except Asia but she is accompanied by strong Dragons, and Koneko is not pushover and the other girls are no weakling so a elbow is a good way of sending Issei a message because a blast could seriously injure him.