Konoha Village is a harmonious and happy small village. This is not only the result of the hard work of the great Hokage and ninjas, but it is also inseparable from the existence of a great profession - sanitation workers.
When Konoha was first established, this profession was jointly and consciously undertaken by every Konoha citizen. However, as more villagers became ninjas and went out to take on tasks, sanitation work became more of a task handed over to new genin, but it still could not be properly solved. Therefore, several chunin who were very limited in their training broke away from the Konoha ninja system to form the Konoha sanitation team, and taught generations of Konoha sanitation people.
As a special benefit for these great sanitation workers, they have a status equivalent to genin from the moment they start sanitation work. When they can independently undertake the sanitation work of a street, they have a status equivalent to chunin. Those who have made important contributions to the cleaning of the village after a war or crisis can be promoted to the same status as a special jounin. Similarly, because they received family sanitation education since childhood, they did not receive education from ninja schools.
Konoha's sanitation system has undergone constant changes and replacements, and more sanitation personnel have chosen to leave and become idols. Oh no, they are becoming ninjas to contribute to protecting the village or promoting the economic development of the village.