A 24-year-old man was arrested Saturday for possessing a knife at a meet and greet event for an all-girl idol group near Tokyo, telling police he wanted to kill one of the members, police said.Security guards found the man, identified as Ryohei Abe from Sapporo, igniting a flare near fans lined up to shake hands with some of the members of Keyakizaka46 in Chiba, east of Tokyo. The police searched him and found him in possession of the knife.There was a metal detector at the entrance of Makuhari Messe convention center where the event was held, but visitors were not asked to present their ba…READ FULL ARTICLE