List me some good dramas to watch

http://mydramalist.com/15229-siren
http://mydramalist.com/2934-shokuzai
http://mydramalist.com/248-shinzanmono
http://mydramalist.com/102-ryusei-no-kizuna
http://mydramalist.com/1329-rebound
http://mydramalist.com/7116-limit
http://mydramalist.com/2905-kingyo-club
http://mydramalist.com/2277-ikemen-desu-ne
http://mydramalist.com/412-good-luck
http://mydramalist.com/495-yasha
http://mydramalist.com/8507-boku-no-ita-jikan
http://mydramalist.com/4621-beautiful-rain
http://mydramalist.com/782-beautiful-life
http://mydramalist.com/1393-long-vacation

Not rom-com, but I just finished "Uso no Sensou" and I highly recommend it.

Kekkon Dekinai Otoko

HanaKimi (the original, not remake)

Gomene Seishun

Saiko no Rikon (less RomCom?)

But idk if these qualify for good "plot"

You can also Watch :
http://mydramalist.com/570-life (school drama, plot about abuse in school)
http://mydramalist.com/151-dragon-zakura (school comedy, a little similar than GTO)
http://mydramalist.com/23-kimi-wa-petto (romantic comedy, speak also about situation of women in society)
http://mydramalist.com/10853-seirei-no-moribito (action, fantasy)

We married as a job
Is not that I can not marry but I don't want to
Pride
Buzzer Beat
Tatta Hitotsu no koi
From 5 to 9
Boku unmei no hito desu
Hana yori Dango
Nodame Cantabile
Love Shuffle
Sekai ichi muzukashii koi
1 litre of tears
Hotaru no hikari 

Last Cinderella
Suki na hito ga iru koto
Dame na Watashi ni Koishite Kudasai

kissasian has a lot of Japanese dramas