I Got a Dragon Son, and a Northern Grand Duke Husband Came as a Bonus Set

"Randolph Ruslec. If you obediently agree to become my father, no further bloodshed shall occur!" Randolph Ruslec has been chosen as a father by Leopold Winterwood, a baby dragon who crashed his younger sister's engagement party. As Randolph gradually falls under the spell of the stubborn, headstrong, yet adorable baby dragon, a problem arises. "How weak." "Say that again." Leo's other father, Beowulf Winterwood, and Randolph Ruslec are famous rivals since their academy days, whose relationship soured due to a past incident! Randolph wanted to firmly refuse anything that involved being entangled with Beowulf, but... "If I can't go with Daddy, Leo won't go!" Leo wants to be with Rando...