Perhaps the original plan was to give her a fresh coating of a White Man’s seed once the tattooing is all finished, making sure that once she walked out, everyone knows how and why she got those tattoos.
"For an assassin you seem to be more adept at milking my cock, with that said give me a few days, I'll be pent up enough to give you another filling by then."
With Japan in the middle of a war against the League of Villains, someone has to step up and protect the unfortunate white foreigners and tourists in the country from all the chaos and destruction! Luckily, the female heroes decided to volunteer to the task to make sure they remain safe and happy. This is what being a Pro Hero in Japan is all about.
