The second option on the title screen takes you to the password input. The actual passwords are in Japanese symbols, so here is their description in terms of 'rows' and 'columns' (as they are shown on the Password screen), where e.g. the sixth symbol from the left in the third row would be named "r3c6". All passwords let you start with the highest possible starting stats of 5 HP, 500 sec time and the long rainbow attack, but zero points.
Enter these Japanese syllables at the password screen for the named effects.