Contradiction with 2 Chronicles 33:1
This verse states that Manasseh was twelve years old when he began to reign, confirming 2 Kings 21:1, so it doesn't contradict it.
2 Chronicles 33:1: Manasseh [was] twelve years old when he began to reign, and he reigned fifty and five years in Jerusalem:
Paradox #1
Numerical Contradiction: In 2 Kings 21:1, it mentions the age of Manasseh when he became king and the length of his reign. There could be confusion or contradiction when comparing his age and reign timelines with other biblical records, such as those in 2 Chronicles 33:1, if different numbers are presented.