Reborn: Starting High School Again

When a weary, forty-year-old civil servant returns to a high school classroom in the year 2000, he thinks God has given him a chance to live his life over. Instead, he discovers he's become the most "abnormal" person in the class. With a sixteen-year-old body and a forty-year-old soul, how will he awkwardly play the part of a teenager in a vibrant school while using adult wisdom to crush the competition? In the end, he discovers that the one who truly needs saving is his own heart, long since dead.