I don't know if they wrote this one before, but I ckecked your list and it's not in there so I'll say: Switch Girl and Switch Girl 2 :)
Delicious Gakuin. It's pretty weird and a bit far-fetched. But I unexpectedly enjoyed it. Made me think "what the heck am I watching!?!" throughout. But I like those kinds of shows. It's like watching a weird anime if that anime was live action. If that makes sense. Anyway... Hopefully more people make recommendations because I'm looking for hilarious (and even weird) j-dramas to watch myself. :D


edit: also Handsome Suit and Killer Bride's Perfect Crime are some WTF Japanese movies that I found amusing and quirky.
Thanks for making this thread alive :) I really appreciate your recommendations :) But can i ask for more? haha :)
this drama just started but it is very funny "yamada and the 7 witches" also known as "Yamada kun to 7 nin no Majo":)
Give Legal High a try. I also recommend as others mentioned it My Boss My Hero.