When creating a new character highlight the "Name" option and enter the following code VERY quickly.
When you are starting the game again or the first time select the difficulty setting "hard" when the game starts, tell the girl its the best rice you've ever tasted. Then say what is your name? or the other option. When the girl is knocked down to the ground just say its none of your business and when you go to the map screen just go to Outside Amahara, the area hidden under the otemon gate. Congratulations you just got 225 easy points, the rank of novice and a ranking of 30-33.3 points. Repeat to amass thousands of points and unlock all of the heads, clothing, and acessories.
Enter the following at the pause menu:
Unlocks more attires for the characters to wear.
Accumulate a specific amount of points (in total) to unlock the following difficulty modes.
The points are added to your total every time the game is cleared.