Area 6 (Daughter’s Town):
To unlock Area 6 (Daughter’s Town), beat Areas 1 to 5.
Area 7 (Bonus Area):
To unlock Area 7 (Bonus Area), beat Area 6 and view the credits.
Double Jump:
To unlock the Double Jump for 1,000 coins at Docomodake House, beat Area 7 and view the credits.