Yep, it is a hidden gem. It actually got 2 awards nominations. English title is "The Strange Pair". It is definitely a weird movie.
https://www.first-loves.com/flim/show.php?i=_LdJcsnmzsWVHtM6_tjO
https://mubi.com/en/pl/films/the-strange-couple
The movie was directed by Nobuhiko Ôbayashi, who also ...

Could someone upscale this movie? It has some on-topic content.
viewtopic.php?t=18218