Hi.
If you are looking for a Japanese word for your tattoo, I recommend this word;
不死身（ふじみ）
This means like a body which never die.
I also recommend this:
最強（さいきょう）
I believe this is cool as a tattoo.
This means like “strongest”.
How about this?
最強の戦士（fiercest warrior）
I would love this. This is too cool.
Good luck!
