The Monday arrest of a man in connection with the murder of a 7-year-old girl in central Japan last week has shocked people who knew him as an "earnest worker" and a "mature" guy.Haruka Kobayashi, 23, who was arrested on suspicion of abandoning and damaging the body of Tamaki Omomo in the city of Niigata, has hinted at his involvement in the killing of the second-grade elementary school student, according to investigative sources. His case was sent to prosecutors on Tuesday.The president of an electrical engineering company that employs Kobayashi in the city said the suspect was "an earnest…READ FULL ARTICLE