Only in Japanese, the game is a simulation & RPG.
Initially, I thought it was a very casual pixel RPG, but I discovered that you can transform occupied hexagonal land to obtain various resources. Resources can be used to turn land into profitable facilities such as farm, fishing ground, pasture. Which means it includes both development and simulation systems.
It feels nothing special in battle. Drag your units to attack the enemy automatically. This is the case in most battles, so it is easier to get bored.