Blade Maker - Arms Shops begins when the main character's father died and leaves him with a debt that he got to pay in 6 months. The game starts in January and ends at the end of June, if the player can't pay the debt it is game over.

Each month is divided into 4 weeks, in those weeks the player can go around the town and buy materials and other items, he also can make new weapons and tools. Some customers will go to the shop and depending on the skills, the quality and the player's reputation there will be more customers.

There are also adventure events that the player has to solve, if he fails he got to do the same event in the last week or each month.

There are a lot of conversations with other characters, customers and girls. There are different endings depending on the actions and reputation that the player got at the end of June, and the same if he pays or not the debt.