A man accused of raping his teenage relative secured a sweetheart plea deal from Manhattan District Attorney Alvin Bragg — and then went on to allegedly sexually terrorize five people in the Bronx just a month later, The Post has learned.

A Section 175 charge would normally be a misdemeanor. The only way to convert it into a Class E felony requires a showing that the “intent to defraud includes an intent to commit another crime or to aid or conceal the commission thereof.” That other crime would appear to be the federal election violations which the Justice Department previously declined to charge.The linkage to a federal offense is critical for another reason: Bragg’s office ran out of time to prosecute this as a misdemeanor years ago; the statute of limitations is two years. Even if he shows this is a viable felony charge, the longer five-year limitation could be hard to establish.