Genjitsu Shugi Yuusha no Oukoku Saikenki

How a Realist Hero Rebuilt the Kingdom follows Kazuya Souma, a 19-year-old aspiring civil servant whose life is upended after his grandfather dies and he realizes he has no family left to rely on. Summoned without warning to the struggling Elfrieden Kingdom in another world, he is expected to act as...