Esper is monster hunter...when esper fight the monster or use too much of their power,their power will be hard to control or they may also become aggressive and go berserk...to prevent that, they need a guide for that so called guiding
Esper is monster hunter...when esper fight the monster or use too much of their power,their power will be hard to control or they may also become aggressive and go berserk...to prevent that, they need a guide for that so called guiding