An Arkansas man pleaded guilty Friday and admitted exchanging nude pictures with a minor for five years, starting when she was 12. Joseph D. Najera, 25, of Lincoln, Arkansas, pleaded guilty in U.S. District Court in St. Louis to one felony count of coercion and enticement of a minor. Najera and the victim met in 2017 via Kik Messenger when Najera sent her a friend request. At that time, the victim told Najera her age. Read: Florida Teacher Arrested After Failing To Report A Suicidal Student, Even While She Was Overdosing During their online communications, Najera sent the victim artwork depict…