Daniel Kelsall's trial for the murder of Sydney man Morgan Huxley heard he was an avid fan of cartoons and Japanese anime.



But Kelsall's interest in animation reached criminal levels, with some saved images police found on his computer classified as child pornography, a court has heard.



Nearly four months after he was jailed for a maximum of 40 years for the stabbing murder of Mr Huxley, 31, Kelsall has pleaded guilty to possessing child pornography.



In Central Local Court on Monday, Kelsall stood in the glassed-in dock and was sentenced to six months' jail.



Kelsall's solicitor, George Breton, told the court that, during the investigation into Mr Huxley's murder, police found more than 30 child pornography images on Kelsall's computer.



Mr Breton said the images were "Japanese anime style", and were all computer generated.



"These images are not the most serious in any way because of the fact there are no images of children," Mr Breton said.



"There were no victims in that sense."



But the police prosecutor said animated child pornography images fuelled the market for images that involved the abuse of children, and the offence was still serious.

According to an agreed statement of facts, police found 11 pornographic images on a computer in Kelsall's bedroom in the Neutral Bay unit he shared with his parents, and 21 images on a hard drive found in the lounge room.

Morgan Huxley's murderer, Daniel Jack Kelsall, during his trial. Kelsall has been sentenced for possessing child pornography Credit:Brendan Esposito

Some of the animated images depicted children under 16 engaged in sex acts and poses with older males, "all with male genitalia exposed".



Magistrate Alex Mijovich sentenced Kelsall to jail, to be served at the same time as his sentence for Mr Huxley's murder.



Kelsall, who was wearing a grey striped suit and white shirt, did not react and was taken down to the cells.



On March 18, a jury quickly found Kelsall, 22, guilty of murdering Mr Huxley, a marine mechanic.



Kelsall followed Mr Huxley from the Oaks Hotel in Neutral Bay into his unlocked Watson Street flat, where he indecently assaulted him and stabbed him more than 20 times in the early hours of September 8, 2013.



The trial heard Kelsall, then a kitchenhand, had reported having "intrusive" thoughts about following a stranger home after work and stabbing them with his chef's knife for "the thrill of it".



In April, Justice Robert Allan Hulme jailed Kelsall for a minimum of 30 years.



Kelsall will be 50 when he is eligible for parole.