what is the saddest romance manga?
['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. ... ']