The Rising of the Shield Hero by Aneko Yusagi

"If you refuse to fight, I'll have to kill you all." Naofumi and his friends meet Fitoria, the queen of the filolials. But in order to fulfill her own objectives, Fitoria challenges Filo to battle! What's more, the Spear Hero, Motoyasu, utters something absolutely shocking. In the midst of despair, when all seems lost, what will Naofumi do?