duplicate of: https://mangapark.io/title/119660 

 

Iwatani Naofumi is summoned to another world to become one of the four heroes, namely the Shield Hero. Starting out with poor popularity and labeled as the weakest, Naofumi found himself betrayed on the third day of his adventure. Having lost faith and money, all that's left is just his shield. Vowing to exact revenge to those who had betrayed him, Naofumi's path is......