The alleged Belgian child killer Marc Dutroux is due to return to the courtroom a day after dramatic testimonies from two surviving victims.
Delhez accused Dutroux of taking pleasure in hurting her
Laetitia Delhez, now 22, told the court on Tuesday how she was chained to a bed and raped after her abduction in 1996.
"He didn't give a damn. He would ask (if it hurt) while smiling, as if it made him laugh," she said.
Another survivor, Sabinne Dardenne, told Mr Dutroux to "go to hell" when he tried to apologize.
Ms Dardenne was raped repeatedly while held for 80 days in 1996, when she was 12.
Ms Delhez, aged 14 at the time, was incarcerated for six days in the same basement cell as Ms Dardenne.
Both girls were rescued when Mr Dutroux led police to his house following his arrest in 1996.
He admits to kidnapping and rape charges - but denies involvement in the deaths of four other girls.
Laetitia Delhez started her testimony in a highly emotional tone on Tuesday, declining to take the traditional oath.
"I swear I will tell the truth, but not without hate and not without fear," she said.
Mr Dutroux told the two girls "he realised the harm" he has done.
"I regret it. I offer you my straight apology," the AFP news agency quoted him as saying.
Sabinne Dardenne then turned on his captor and asked the judge to silence him.
"To be vulgar, he can go to hell with his excuses,¿ she exclaimed.
Ms Delhez also rejected the apology.
Julie Lejeune, 8, allegedly starved
Melissa Russo, 8, allegedly starved
An Marchal, 17, buried in garden
Eefje Lambrecks, 19, buried in garden
Sabine Dardenne, then aged 12 - survived
Delhez, then aged 14 - survived
During her testimony, Ms Dardenne asked her captor why he had not handed her over to the alleged paedophile ring.
Mr Dutroux replied: "I did not give her because I knew that she was going to be killed.
"When I stay with someone for a time, I end up becoming attached to them."
Mr Dutroux is on trial with three others over abductions, rapes and murders of girls in the mid-1990s.
Eight-year-olds Melissa Russo and Julie Lejeune died as captives in Mr Dutroux's home.
Two teenagers, An Marchal and Eefje Lambrecks, were murdered. Mr Dutroux blames his co-defendants for their deaths.
Many Belgians hope the trial may provide answers to broader questions - such as why it took so long to catch Mr Dutroux and whether he was part of a larger paedophile ring.
More than 400 witnesses are listed to give evidence in the trial, which is expected to last until June.