INFO:

Naofumi Iwatani, a university student, is summoned to the other world as one of the Four Holy Bravehearts, the "Brave of the Shield". Despite being persecuted for countless indiscretions, he struggled with his companions to defend people from the "wave" of disasters that threatened the world. However, strange happenings, such as the bat familiars and the Four Cardinal Heroes, cause the queen to doubt if the Spirit Tortoise has been reborn. The calm started to gradually be disrupted. What can be done to defeat this demon that has brought tremendous disaster? How to track the person who illegally awakened the spirit tortoise? Naofumi Iwatani