Yo-Kai Watch Busters Passwords, QR Codes, Tips and Tricks (You Need YWB and a Japanese 3DS in Order to use these)

Passwords:

USApyon Outfits:

ぽ4PわE6Sぐ

ば8JまQ6Aぷ

ち8AくL2Uみ

ろ9DれH7Vぞ

 こ3YうZ1Yる

Coins and Stuff:

 なんかようかい

 ごうせいだいせいこう

 うぉっちをかざせば

 えみちゃんだいすき

 うきうきにゃっち

 よーよーよーかい

 ＹＫＷＵＫＩＵＫＩ

 ゆうじょうＬＶＭＡＸ

 めだるでつながる

 かーどでうきうき

 みえないともだち

(you can find more here)

QR Codes: 

Song QR Codes:

(They are basically boosting stats)

You can find more QR Codes at here

Source: https://watchofyokai.com/yo-kai-watch-busters-essential-qr-codes-part-1/