First go to the Main Menu, then Extra, then Second Option.

Effect	Password
Aliase Sticker	SCM6JW7LFP3WKY4A
Avan & Cosette Sticker	EL8TJ8G89K83C7KF
Good Smile Company Sticker	HJE3QX3M7BFXMHT5
Puyo Puyo Sticker	TJLF9AYGR344XN4G
Rappyko Sticker	R72ZPF4L7L3C7G6M
Shining Hearts Sticker	P9FMEB2A5Q9GNFPW
Torosutesutekka Sticker	TB6WKAEZ53R7GG8X
Zeri Sticker	4FL4WZ562R9FS4GN