Outsider Strategist～異世界で軍師になる～ Steam Unlock

How fun would it be, if I could succeed as a strategist in a world like that of a tactical RPG? Yuuto, a Japanese young man and the protagonist of this story, dreamt such. Thusly, he was joyed when he really was sent to a different world and hired by a member of local royalty. However, he gradually learns.