You will need 2 people. You both sign in.

Before playing you'll need to do this, press A on player 2 and a split second after that player 1 will press A.

The select character menu will show up. Player 2 will select a level 1 person (anyone).

Save but while its auto saving, Exit.

Get back on and there should be a level one no name whatever.

Select it then just play. Your person should be back to the regular level with as many skill points as your level.

Repeat as much times as you want.