Prosecutors demanded an 18-month prison term Monday for actress Noriko Sakai for possessing and using illegal drugs in July and August, charges for which she has pleaded guilty.

"I have caused so much trouble against society and so many people around me because of my thoughtless actions," Sakai, 38, told the Tokyo District Court. "I will never use stimulants again, and will make the effort, day by day, to retrieve the trust I have lost."

Dressed in black, Sakai shed tears during the one-day trial, where her attorneys asked for a suspended term. The court will hand down a sentence Nov. 9.