Could be BG,BL or GL. I’m honestly up for any Japanese dramas. I just hope for there to be romance! I enjoyed watching Cherry Magic, Itazura Na kiss and Daytime shooting star. Please recommend some sweet japanese romance dramas!

If anything with romance tag can go, then isn't it better to just use teh advanced search of MDL and filter out romance dramas from Japan.
Like this : https://mydramalist.com/search?adv=titles&ty=68&co=1&ge=19&so=relevance

Here, are some of em from my list. Only listed dramas here(slides in a drama special though). No movies(Most of em have Romance but tearjerker so didn't add em).

-  Boku to Star no 99 Nichi 
-  Chugakusei Nikki 
-  G-Senjou no Anata to Watashi 
-  Kahogo no Kahoko 
-  Kono Koi Atatamemasu ka 
-  Ohitorisama 
-  Proposal Daisakusen 
-  Shitteru Waifu 
-  Starman - This Star's Love 
-  Summer Nude 
-  Watashi ni Unmei no Koi Nante Arienaitte Omotteta  
(Drama special)
-  Love Kome no Okite: Kojirase Joshi to Toshishita Danshi 
-  Aishiteiru to Ittekure 
-  Oh! My Boss! Koi wa Bessatsu de 
-  Boku no Satsui ga Koi wo Shita 
-  Lupin no Musume 

pride is really good

buzzer beat

coffee and vanilla ( steamy romance)

love phantom ( very steamy romance ) 

ill add more as i remember the good ones i watched

  • Pride
  • Buzzer Beat
  • From 5 to 9
  • Boku unmei no hito desu
  • Soratobu kouhoushitsu
  • We married as a job
  • It's not that I can't marry but I don't want to
  • Sekai ichi muzukashii koi
  • Marry Me!
  • Tatta hitotsu no koi
  • Hana yori dango
  • Uchi no musume wa kareshi ga dekinai
  • Takane no hana