I received these as a gift, but I'm not going to use them, so I'm selling them. Brand new, unused! There was an instruction sheet for the yellow one, but there isn't one for the black one, so I don't know what the effects are (>_<) I can sell them separately, but the price will be a bit higher at 1,222 yen, so thank you for your understanding. m(__)m ⚠️Please read my profile before purchasing⚠️