A Japanese businessman admitted Wednesday to drugging and raping a co-worker at a Times Square hotel — and he’ll get 7 1/2 years in prison for it.

Masakatsu Yukitoshi, 46, copped to first-degree rape, sex abuse and facilitating a sex offense with a controlled substance as part of a plea deal.

“This defendant abused workplace power dynamics to prey on a junior colleague in an appalling act of sexual assault,” said Manhattan District Attorney Cyrus Vance Jr. in a statement.

“This ordinary business trip devolved into an utter nightmare as he drugged her with sleeping pills and then forced himself on her while she was totally incapable of consent.”

Yukitoshi was staying at ROW-NYC with the victim, whose name is being withheld due to the nature of the crime, while in town on a business trip Nov. 18, 2017.

The woman told cops that the senior technology executive gave her a glass of orange juice in his hotel room on 8th Avenue near West 44th Street then she lost consciousness.

When she came to, she was in his hotel bed and didn’t have her pants on, she told cops.

She asked him what happened, and he told her they had sex. She went to the hospital, where a rape kit and toxicology tests were performed.

Yukitoshi later admitted that he had mixed the powerful sedative triazolam into her drink, authorities said.

The disgraced businessman, who is from Fushimi-ku Kyoto, Japan, will be sentenced Aug. 29.

His lawyer, Akane Fujiwara, declined to comment.