Question: what is the saddest romance manga?
Answer: Deep love- Ayu no Monogatari. amazon jp. Mangaka: Yoshi (story), Yoshii, Yuu.
NANA. Buy now. Mangaka: Yazawa, Ai. ... 
3. Fruits Basket. Buy now. Mangaka: Takaya, Natsuki. ... 
Sekai no Hate. Buy now. Mangaka: Makino, Aoi. ... 
Watashitachi Shiawase na Jikan. Buy now. ... 
Hana to Akuma. Buy now. ... 
Mademoiselle Butterfly. amazon jp. ... 
Haou Airen. Buy now. ...