kono_yo_no_hate_de_koi_wo_utau_shoujo_yu-no
YU-NO: A girl who chants love at the bound of this world
A visual novel by Elf from 1996, with character designs by Nagaoka Yasuchika, who would go on to direct Seikai no Monshou (Crest of the Stars) & New Cutey Honey.
The anime adaptation was aired in summer 2019.