Chronicles 2 ch.33 - Menashe's Teshuva

Do we suffer for our parents sins?Today we suffer the most evil king of Yehudah - King Mennasseh. In the book of Kings his idolatry is the cause of the Hurban - the national exile. But here in Divrei Hayamim, we witness Menasseh repenting and recanting from his idolatrous ways. What is the truth? Why does Divrei Hayamim report this previously unknown story?