Rank Promotion
In order to move onto the next level and be promoted to a new rank, you first need to collect the required amount of power and, after this, pay the state fee. Another way is via morelbeer. If you drink it, then, with a certain amount of probability, you will be promoted the next morning.
A character's power level depends on two factors: the quantity of buildings and their corresponding levels, and the outfit which is worn by the character, along with the quantity of outfits the player has and their quality. In the future there will be new conditions for increasing a character's power level.