Kim Jong Un has gone nuclear in a new crusade against sex — lashing out at “immorality” and “impure acts” among teens in the Hermit Kingdom, according to a report.

After laying low off and on for the past few weeks, the reclusive leader has targeted what he deems “treasonous” behavior by youth with overactive sex drives, the UK’s Express reported.

Blaming “decadent capitalist influences,” including porn smuggled over the Chinese border, Kim suggested that parents and teachers could face punishment if they fail to control the teens’ behavior.

“Recently more and more high school boys and girls are engaging in immoral sexual deviance, and the Central Committee of the Korean Workers’ Party has issued a directive calling for strong measures against them,” a source told Radio Free Asia, according to Express.

“The reason behind this order is that the local Kimilsungist-Kimjongilist Youth League in Sinuiju inspected high school students, and found that some high school boys and girls hang out with local gangsters, live together, and commit immoral acts such as prostitution,” the source said.

“The immoral sexual behavior of students, who are influenced by capitalist lifestyles, has become a problem,” the person added. “The committee defined sexual promiscuity among teenagers as a treasonous act that helps the enemy to destroy our society.

“And since they are warning of strong punishment, students are shaking with fear.”

To stem the rise in “sexual promiscuity,” largely due to a rise in electronic media, the committee has “ordered schools to check students for phones or other devices they might have with them,” the source said.

This is accomplished using an application called Red Flag, which keeps a record of all sites visited by users and randomly takes screenshots that can be checked by authorities.

Another source warned there was widespread alarm at the strict measures among educators.

“Teachers are anxious because of the warning that school principals, advisers to the Kimilsungist-Kimjongilist Youth League and the Korean Children’s Union, and school teachers, will also be punished if there is a serious sexual violation among students,” the source said.

Many also blamed the “increase in deviance” on the postponement of the school year amid concerns about the risk posed by coronavirus — although the rogue regime has not officially admitted to having any cases of the illness.

“As students do not go to school and are staying at home, they naturally approach impure media with curiosity and share it with each other, so there is an increasing number of these immoral sexual behaviors,” the second source said.