The Mark of Magical Girls
However, if a magical girl used to her powers to kill someone, a mark will appear on their body.
This unforgiving proof of murder, which never appears on men, will turn the life of its bearer into hell on earth.
Despite that, the women still chose fight, for the sake of their country, for the sake of their family, and for the sake of the men. They stood their ground on the battlefield, endured having these marks of sin carved unto their bodies repeatedly, and continued to cross swords with the women from other countries.