Golden Time (Light and Shadow, #2)

The second installment of the Light and Shadow webtoon/novel saga by Ryu Hyang. Alex, eldest son of Duchess Edna and Duke Eli, sets out to see the world and feels strangely drawn to a shabby young boy named Kenny. He doesn't realize Kenny is really Yessica Solveg, a hidden princess betrothed to the violent Duke Frederick – and that their budding bond could ignite a war.