The Kim Twins

Kim Seungmin and Kim Jeongin arrive in Seoul for their first year of college with easy smiles, old-money manners, and a pact to protect each other first. They stumble into a world of midnight engines and neon loyalties when they meet four legendary underground racers-steady, quietly ferocious Chan; sharp-tongued romantic Minho; iron-hearted softie Changbin; and beautiful tempest Hyunjin. Sparks fly in pairs: Chan ↔ Jeongin, Minho ↔ Jisung (a genius producer with sunshine swagger), Changbin ↔ Felix (a glittering fighter with a gentler roar), and Hyunjin ↔ Seungmin, whose calm turns Hyunjin's fury into focus.

Across city rooftops, garages, studios, and dorm hallways, the eight build a found family-teasing, cooking, racing, writing songs, and learning to love out loud. Secrets, jealousy, and messy misunderstandings test them; apologies, loyalty, and stubborn devotion stitch them back together. Parents arrive, rivals posture, engines scream, and still the heart of the story remains: two twins choosing their own futures, four couples choosing each other, and a city that turns from maze to home. It's romance with grease under its nails-soft, fast, and fiercely protective.