Taboo-Tattoo

"Tattoos" - ancient weapons that drastically enhance the physical abilities of their users, known as the "Sealed," allowing them to bring forth supernatural phenomena when activated through the charging of the user's own unique "trigger." When Justice Akatsuka (a.k.a. "Seigi") saves a man from some street punks, the man gives him a strange stone as a token of gratitude. The moment Seigi accepts it, a mysterious tattoo appears on his palm. And so the battle begins, framed by a web of conspiracies and centering around Justice Akatsuka, the boy who obtained a "tattoo" by complete chance.