User blog comment:B214/Volume 23 discussion blog/@comment-31137559-20170214233224/@comment-31137559-20170220144944

Well the thing about that is if they heal better than Asia and if it is practical in a battle situation? Issei was healed after getting shot in the leg by a light bullet by Freed and he was still feeling it until Asia healed him and he was good as new. My guess is that healing is somewhat hard to do or a difficult process using magic or demonic powers. That's why the forces were trying to find other users of Twilight Healing because of its effectiveness. The only thing that is a match for or better than Twilight Healing is Phenex Tears.