To Me, the One Who Loved You Light Novel

To Every You I've Loved Before and To Me, The One Who Loved You: two novels, two films, one multiverse. In Hidaka Koyomi's world, travel between slightly different alternate universes is commonplace. After his parents' recent divorce, Koyomi lives with his father, and falls in love with a girl named Shiori Sato when they meet at his father's workplace. But their young love seems doomed when their parents get remarriedeach other. Is there some parallel world out there where Koyomi and Shiori can be together as lovers, not step-siblings... and what could be the price if they try to find out?