The Guy Is the Biggest Mistake of My Life (2020– )

TV Series   |  Romance

Episode Guide
The Guy Is the Biggest Mistake of My Life (2020) Poster

Yui is a non-permanent employee at a pharmaceutical company who is feeling downtrodden following the death of her pet. She is wallowing in sorrow when she gets the notion to make the dead ... See full summary »


Get More From IMDb

For an enhanced browsing experience, get the IMDb app on your smartphone or tablet.

Get the IMDb app

Cast & Crew

Top Series Cast

Reviews & Commentary

Add a Review

User Reviews

5 August 2020 | lyntonadam
| Would you like a slave ?
I'm always interested in an unusual story, regardless of the medium, & there's a Japanese genre of quirky stuff which fits the bill. For example, "You're My Pet" has a young woman discover a young man sleeping in an alley & decides to take him home & make him her pet; like a cat or dog. Or there's "My Girlfriend Is A Serial Killer", where a cute young lady with a high/girlish voice murders people while a man who lives next door somehow falls in love. The former works better than the latter, & this new series is a good one. An average office drone ( former J-Popper Airi Matsui ) is in a bar one night when she gives a male customer ( the suave Mokomichi Hayami ) a bit of an insult. It later turns out that he's the highly talented CEO of the large pharma company she works for. He then begs her to let him be her slave, since nobody has ever done anything but praise him. And he's VERY rich. So it's sort of the plot to the movie "Secretary" flipped around & nowhere near as intense ( & adapted from a manga by its author ). It's entertaining & often funny as the smitten CEO goes to extreme lengths to pledge his devotion while his creeped-out target subjects him to periodic violence. Yes, he's technically a stalker yet his affection seems genuine, so where does he cross the line into criminal behaviour ? It's an interesting question.

Did You Know?


Plot Summary




Release Date:

19 January 2020



Country of Origin


Contribute to this page

Reboots & Remakes We Can't Wait to See

From "Dexter" to The Suicide Squad, here are our picks for the reboots and remakes we're most excited for in 2021 and beyond.

Browse our picks

Unforgettable Oscars Fashion Through the Years

From the iconic to the eclectic, relive the most memorable moments from the Oscars red carpet.

See the full gallery

Around The Web


Powered by Taboola

More To Explore

Search on