“《9S》号称最简单的轻小说名，其实那也是如果杜拉一样的缩写，人家的原名是
The Security System that Seals the Savage Science Smartly by its Supreme Sagacity and Strength"
知乎原文 http://zhuanlan.zhihu.com/nococ/19758101
想想这么长的名字读起来就霸气