Thank you all for so many really very useful ideas!
I will definitely double check the Chinese characters (though I am quite sure they are the elements, like fire, water etc) and ask them to be made smaller. Even like that, though, I understand the Russian script wouldn`t fit on my lower arm. Something else that I haven`t thought before is the questions I would get. Is it considered rude to not give explanations, or say something like "that`s a long story"? This is too personal for me to be sharing with everybody. Which also makes me think -as John suggested- to put it out of plain view. But where would that be? I would love it directly near my heart but don`t know if that would be smart -again for maintenance reasons, as in shaving chest hair🙄