The Second Son of a Rural Baron, Ian Percus. One day, a love letter from the future arrived for him. 'If you fail to protect the future, the world will perish.' Along with a chilling warning, hastily scrawled by someone. **Original Novel:** [Novelpia](https://novelpia.com/novel/52791), [KyoboBook](https://ebook-product.kyobobook.co.kr/dig/epd/ebook/E000007232713), [KakaoPage](https://page.kakao.com/content/66562972) **Official Translations:** English