Bryan Kohberger has filed a sexual harassment complaint and is begging for a transfer after a fellow inmate threatened to “b—h f–k”  him, and another made a crude sexual remark within days of his arrival at Idaho’s hellhole max security prison.

The convicted killer of four University Idaho undergrads had barely made it one night in his maximum security prison before requesting to be moved to another part of Idaho Maximum Security Institution in Boise on July 30, according to documents obtained by People.

The request complains of “minute-by-minute verbal threats/harassment,” as well as prisoners flooding their own cells with toilet water and other mischief.

Less than a week later, Kohberger gave a guard a handwritten note claiming a fellow inmate had threatened to rape him, People reported.

Another inmate allegedly said: “The only a– we’ll be eating is Kohberger’s.”

Kohberger’s facility is the notorious J Block, which houses a mix of general population and death row inmates.

Long term prisoners are kept in their own cells, moved in restraints, allowed only one hour of outdoor time each day, and allowed a shower only once every second day.

The rough treatment makes Kohberger’s pre-trial housing in county jails — in which he took hourlong showers and constantly requested clean clothes and bedding — look downright ritzy.

Yet even a lifetime in Block J isn’t bad enough for some family members of Kohberger’s victims, who had pushed for the death penalty.

Kohberger dodged the firing squad as part of a “guilty” plea deal for the brutal slayings of undergrads Kaylee Goncalves, Madison Mogen, Xana Kernodle and Ethan Chapin in their off-campus house in Moscow, Idaho.

Several family members had condemned the deal, which both spared Kohberger from a potential execution and also meant that there would be no fulsome presentation of the evidence in court.