第1章 热心的女同事 

Enthusiastic female colleague

My brother’s phone is full of magical girl manga—guess he’s really hit puberty, huh? As his little sister, I can understand that he might keep a rare, priceless magical girl costume hidden in his closet. A special quirk of his, right? Sure, as his sister, I can accept that.

But when my brother actually transformed into an evil magical girl and showed up on the battlefield… that, I couldn’t understand at all! Just when did my silly brother fall to the dark side?!

哥哥的手机里全是魔法少女的漫画，哥哥的青春期到了嘛~
  身为妹妹的我，可以理解···
  哥哥的衣柜中珍藏着一套用钱都买不到的绝版魔法少女礼服，哥哥的特殊癖好嘛~
  身为妹妹的我，可以理解···
  但是当哥哥变身坏蛋魔法少女，出现在战场上的时候。
  身为妹妹的我，非常不理解···
  笨蛋哥哥是什么时候恶堕了的！！！