Watch Taboo Tattoo season 1 episode 1 (S01E01)
Justice Akatsuka, aka Seigi saves a homeless man from some thugs. The man repays him by sticking a strange rock on his right hand, giving him a tattoo, before wandering off. The next day, Seigi attracts the attention of a mysterious girl, who steals his cell phone and then attacks him in an abandoned building. The girl, Izzy, fills in Seigi on her own tattoo and the power it holds. The next few days, Izzy stalks Seigi around town, though both he and his friend Toko both notice her poor skills at tailing him. Suddenly, Seigi is attacked by an American mafioso with a tattoo of his own. After nearly being killed by the man, Seigi accidentally unleashes his own tattoo's power, defeating his attacker.