Hello. Looking for doramas that just won't end like a villain in a 90's action movie, like Gokusen or Trick. 

Doramas that have at least 2 seasons and a bunch of specials. Genre whatever. 

Thank you very much in advance. 

Bloody Monday (2 Seasons, suspense)
Legal High (sadly only 2 Seasons because it's the most hilarious lawyer drama but at least it also has two specials)
Death Note (3 Movies, 1 Drama, and 2016, so this year, comes another revamped version)
Kamen Rider (it seems endless although I never watched it)


Hana Yori dango (2 seasons and 1 movie)
Nodame Cantabile ( 1 season, 2 specials and 2 movies)
GTO (new remake, has 2 season and a special)
Itazura na kiss
Liar game (2 seasons and 1 movie)

I'll add
SP (detective) and SPEC (police/supernatural)