Everyone keeps comparing this to Overlord, it has more Ester De Valonia vibes what with MC being the sole human in the kingdom's government and the king of a beast/demon/non-human kingdom. Not to mention thinking that he's weak in comparison to his former NPC generals and government leaders. He also worried early on (and for most of the manga version) about their loyalties and potential rebellion from them. Either way, I really would think that's a bad game design, not giving the leader of a country fighting power. I mean how did he build the kingdom in the game as a player in the first place? But I guess it could make sense in a tactical RPG with real-time or turn based tactics, but then again, the game could design an event where the king had to fight and should give him some fighting abilities, at least.