Apologies for the link but the tweet is deleted and this post has a translation of it:

"The production manager says, "If you don't do well this time, you'll be erased from the industry," so I'm working while crying, telling myself that if I don't do my best, I'll be erased, erased.

I'm working while crying, telling myself that if I don't do my best, I will be eliminated. I told you "it was impossible," but I swallow it down. There's no good in fighting with the production manager now."

In the comments, someone else mentioned this was the tweet before that one:

"I dreamed about getting strangled by a person in my company and even after I woke up it still hurts for some reason. Since that day I've had this suffocating feeling, as if someone was pressing on my throat. Of course I got worried and went to the hospital to get it checked, but there was nothing wrong with it. What is this..."

This is absolutely heartbreaking