In this steamy adult anime, constantly bickering siblings Ritsuki and Kyoya Shinoyama seem to hate each other—fighting in front of friends and never getting along. But when a rainy collision at home forces them to confront hidden attractions, long-suppressed desires ignite. What starts as resentment turns into intense, forbidden passion as they discover their bodies are perfectly matched in ways neither expected. A classic "fighting siblings to lovers" taboo tale packed with tension, teasing, and explicit encounters.