The Reluctant Companion by H.L Day

Sebastian might have the power to summon animals, but winning Jack over? Far more difficult.

As first encounters go, Jack and Sebastian’s isn’t ideal, leaving Jack nursing a grudge he’s not about to let go of in a hurry. Yet, if Jack is to find his missing sister, and Sebastian is to rescue his captured prince, they’ll need to set their differences aside and work as a team.
Jack is stubborn and somewhat volatile. Sebastian is vain and clearly in love with himself. But as the unlikely companions face all manner of dangers together, they grow closer. Rescuing the prince should be easy. Rescuing him from an impenetrable tower guarded by dragon-shifting knights? Okay, that part is harder.
But once the adventure is over, letting Sebastian go might be the hardest thing Jack has ever had to do.