Gravitation by Maki Murakami - Funimation
Given by Natsuki Kizu- Crunchyroll 

Hetalia by Himruya- Funimation 

Junjou Romantica by Shungiku Nakamura - Funimation 

Studio Deen 

Super Lovers by Miyuki Abe - Crunchyroll

World's Greatest First Love (Sekai Ichi) by Shungiku Nakamura - Funimation 
Whimsical Jaguar By Unohana - Futekuya 

TharnType Thai Drama - Line TV 

Love Stage by Eiki Eiki & Taishi Zao- Cruncyroll 

Dakaichi by Hashigo Sakurabi - Crunchyroll 

Ingredients Thai Drama - Youtube (legally)