The manga A Report On How I Woke Up One Morning As My Pregnant Wife: New Parents¹ referenced an interesting meme phrase, “保育園落ちた日本死ね!!!”. Translated, it loosely means “we didn’t get into any preschools, fuck Japan!!!”

Summarizing the Wikipedia article about the phrase, it first appeared on a blog in 2016. Parents end up getting stuck on the waitlist for admission to preschool/childcare, despite applying early. Officially, the problem has gone down, though. As I recall, the problem is indirectly referenced in SAHARA Mizu’s My Girl as well, when the single father Masamune suddenly has to deal with finding childcare after not realizing he needed to apply early for preschool. (I might have mixed it up with another series, though.)

Incidentally, both of those series are good reads—definitely go check them out.