Someone translated a modern manga adaptation of some of Yoshiya Nobuko's Hana Monogatari. I really like the josei art style and I like Yoshiya's sensibility, but they aren't exactly a barrel of laughs. The closest it gets to a happy ending is a double suicide.
https://mangadex.org/title/1e9b15da-41b7-4609-b672-019be4351f32/hana-monogatari