Friedrich no Senjou - Shinku no Tensai Gunshi, Uso Kara Hajimeru Eiyuutan

Friedrich, a once-orphaned but brilliant young man, lived a quiet and peaceful life in a rural village. However, that peace was abruptly shattered by a raid from a band of thieves. While the villagers were consumed by despair, Friedrich stood apart—he stepped forward before the people and said, "I am the son of a hero. If you follow my plan, we will surely win!"