I Got a Dragon Son, and a Grand Duke of the North Husband Came Along as a Bonus

"Randolph Ruslek. Please become my dad. If you comply willingly, there will be no more bloodshed!" Randolph Ruslek is chosen as a father by the baby dragon Leopold Winterwood, who crashed his sister's engagement ceremony. As Randolph becomes increasingly captivated by the lovable yet spoiled and stubborn baby dragon, a problem arises. "Pathetic." "Say that again." It turns out that Leo's other father, Beowulf Winterwood, and Randolph Ruslek are famous arch-rivals dating back to their Academy days, having had their relationship soured by past events! Randolph wanted to firmly refuse any involvement with Beowulf, but... "Leo won't go unless he goes with Dad!" Leo wants to be with Randolph to an unusual degree. Meanwhile, as rumors spread throughout the country, Randolph begins to attract excessive attention and is exposed to threats from those coveting the dragon's power. Beowulf proposes a contract marriage to resolve the situation. "Marry you? Eww..." "My father may be a bit ugly, but he has a kind heart! Please, Dad, give him a chance just this once!" "You jerk!" Just when he gained a dragon son, the Grand Duke of the North came along as a bonus. Will the two be able to overcome their ill-fated relationship and form a harmonious family?