地球のおわりは恋のはじまり

Mahiru Yanase has always felt overshadowed by her cute and popular twin sister, Mayo, leading her to believe she's the "lesser" twin. Convinced that good things in her life are always followed by bad, Mahiru lives with a pessimistic outlook—until her first day of high school, when Aoi Satomi, a kind and handsome classmate, helps her and asks her out. Shocked by his interest, Mahiru fears that such happiness might just signal the end of the world. As she navigates her budding feelings and the complexities of her relationship with Mayo, Mahiru begins to challenge her negative worldview and embrace the possibility of love. (Unreviewed summary by Grok 2)