After their success, Asen was crowned emperor and became known as Ivan Asen I. Peter IV voluntarily stepped down to make way for his more energetic brother; Peter IV retained his title but Ivan Asen assumed authority.
Pärast edu krooniti Asen tsaariks ja sai tuntuks kui Ivan Asen I. Peter IV astus vabatahtlikult tagasi, et teha teed oma palju energilisemale vennale; Peter IV säilitas tiitli, kuid Ivan Asen võttis võimu.