I don't know why, but I always felt like Soma had some sort of issue with his father. So I just just had this scene play out in my head where Raja comes to London to try and drag Soma back home. When Soma refused to, Raja threatens to have Agni come back with him. Not even looking startled, Soma looks at Agni. Agni simply smiles at Raja and says he is not loyal to him, but to Soma. Then, the prince takes his butler's hand and grins at his father. "Agni's the one thing you can't take from me~" is what he says before walking off with Agni, hugging Agni's arm.