If there's one thing I've learned from anime and manga, it's to never work in Japan. Their work culture is just so insanely warped, I would probably end up jumping under a train too.
(Before anyone points it out, yes, obviously anime and manga aren't accurate representations of the situation. Having done some actual research about it on the side, it seems like the reality is much worse.)
Also it's funny how this light-hearted gag manga is casually tackling heavy, controversial topics like sexism, power abuse at work and depression head-on, when most actually serious manga often tiptoe around them.