Obviously, Roan went into the Dimensional Realm to interrogate the Angel he captured. The twins knew nothing about the Heavens. For now, they needed to find where they could reach the Main Temporal Path so that they could return to the Realm of Gods.
Hastian suddenly felt like his head was being split apart due to the huge pain Roan caused him during their battle. He slowly opened his eyes, not being able to focus his mind for the same reason. He tried to guide his Light Element and Heavenly Energy into his Soul, but he quickly noticed that there was almost no Heavenly Energy available at all. Only then did he pay attention to his surroundings while using that little amount of Heavenly Energy to stabilize his Soul.