Seigi has a strong sense of justice and ends up receiving a mysterious, cursed brand on the palm of his hand after rescuing a homeless man.
But when his good intentions are put to the test by saving an old homeless man from some street thugs, the mysterious man shows his gratitude by…burning a tattoo onto Seigi’s palm?!
It turns out, the tattoo is a powerful secret weapon that everyone–including a formidable girl with a tattoo of her own–is after.