Osomatsu-kun: Back to the me no Deppa no Maki, or Osomatsu-kun for short, is an rpg-ish game released in 1989 for the Famicom. Take control of a variety of odd characters such as Iyami, the Francophile with a large overbite, Chibita, the small, bald, Oden-loving kid with a bad temper, Osomatsu and his sextuplet brothers, and a host of others on a quest to do something.
The Game Genie code AESNENNY re-enables this simple debug mode. In this mode the password option on the title screen will lead to the stage select screen when the player presses Start on it. To enter the normal password screen, hold B before pressing Start. Additionally, the player will have 10000 money at the beginning of the game. Some other debug features were disabled, but there are still some routines left unused.
The RESET routine in this game uses string "Yoshikawa" to check if game was soft or hard reset.