Airi Sato, an emotionally closed-off perfectionist, meets Ren Kurosawa, a passionate troublemaker, in high school. He teaches her to feel; she teaches him peace. They fall in love but choose different universities four hours apart. Over four years of long-distance, they face jealousy, exhaustion, and near-breakups, but keep choosing each other through brutal honesty and unwavering commitment. After surviving the distance, they reunite in Osaka, build successful careers—she as a psychologist helping invisible teens, he as a veterinarian saving rescue animals—marry on their high school rooftop, and start a family. Rain transforms from loneliness to love.
Core Theme: Love is a daily choice, especially through distance and difficulty.